"half-life" meaning in English

See half-life in All languages combined, or Wiktionary

Noun

IPA: /ˈhæfˌlaɪf/ [US] Audio: LL-Q1860 (eng)-Persent101-half-life.wav Forms: half-lives [plural]
Etymology: From half- + life. Etymology templates: {{prefix|en|half|life}} half- + life Head templates: {{en-noun|half-lives}} half-life (plural half-lives)
  1. (physics) The time required for half the nuclei in a sample of an isotope to undergo radioactive decay. Categories (topical): Physics, Physical quantities, Radioactivity, Time Translations (time in physics): կիսատրոհման պարբերություն (kisatrohman parberutʻyun) (Armenian), yarımdağılma dövrü (Azerbaijani), перыяд паўраспаду (pjeryjad paŭraspadu) [neuter] (Belarusian), период на полуразпад (period na polurazpad) [masculine] (Bulgarian), període de semidesintegració [masculine] (Catalan), període radioactiu [masculine] (Catalan), 半衰期 (bànshuāiqī) (Chinese Mandarin), poločas rozpadu [masculine] (Czech), halveringstid [common-gender] (Danish), halfwaardetijd [masculine] (Dutch), halveringstijd [masculine] (Dutch), duoniĝa tempo (Esperanto), poolestusaeg (Estonian), puoliintumisaika (Finnish), demi-vie [feminine] (French), período de semidesintegración [masculine] (Galician), ნახევარდაშლის პერიოდი (naxevardašlis ṗeriodi) (Georgian), ნახევრად დაშლის პერიოდი (naxevrad dašlis ṗeriodi) (Georgian), Halbwertszeit [feminine] (German), χρόνος ημιζωής (chrónos imizoḯs) [masculine] (Greek), अर्धायु (ardhāyu) (Hindi), felezési idő (Hungarian), helmingunartími (Icelandic), waktu paruh (Indonesian), leathré [feminine] (Irish), emivita [feminine] (Italian), semivita [feminine] (Italian), 半減期 (hangenki) (alt: はんげんき) (Japanese), ಅರ್ಧಾಯುಷ್ಯ (ardhāyuṣya) (Kannada), жартылай ыдырау мерзімі (jartylai ydyrau merzımı) (Kazakh), 반감기 (ban'gamgi) (Korean), pussabrukšanas periods (Latvian), pusėjimo trukmė (Lithuanian), период на полураспад (period na poluraspad) [masculine] (Macedonian), separuh hayat (Malay), അർദ്ധായുസ്സ് (aṟddhāyussŭ) (Malayalam), halveringstid [feminine, masculine] (Norwegian Bokmål), halveringstid [feminine] (Norwegian Nynorsk), نیمهعمر (nime-'omr) (Persian), czas połowicznego rozpadu [masculine] (Polish), okres połowicznego rozpadu [masculine] (Polish), meia-vida [feminine] (Portuguese), semivida [feminine] (Portuguese), perioadă de înjumătățire [feminine] (Romanian), пери́од полураспа́да (períod poluraspáda) [masculine] (Russian), vreme poluraspada [Roman, neuter] (Serbo-Croatian), polčas premeny [masculine] (Slovak), razpolovni čas [masculine] (Slovene), periodo de semidesintegración [masculine] (Spanish), semivida [feminine] (Spanish), vida media [feminine] (Spanish), halveringstid [common-gender] (Swedish), kalahatimbuhay (Tagalog), அரைவாழ்வுக் காலம் (araivāḻvuk kālam) (Tamil), అర్థ జీవితకాలం (artha jīvitakālaṁ) (Telugu), ครึ่งชีวิต (Thai), пері́од напівро́зпаду (períod napivrózpadu) [masculine] (Ukrainian), yarim yemirilish davri (Uzbek), chu kì bán rã (Vietnamese), chu kỳ bán rã (Vietnamese), chu kỳ nửa phân rã (Vietnamese)
    Sense id: en-half-life-en-noun-yQIEIhfg Disambiguation of Physical quantities: 38 18 23 22 Disambiguation of Radioactivity: 57 12 25 6 Disambiguation of Time: 27 23 25 26 Categories (other): English entries with incorrect language header, English terms prefixed with half-, Entries with translation boxes, Pages with 1 entry, Pages with entries, Terms with Afrikaans translations, Terms with Arabic translations, Terms with Armenian translations, Terms with Azerbaijani translations, Terms with Belarusian translations, Terms with Bulgarian translations, Terms with Catalan translations, Terms with Czech translations, Terms with Danish translations, Terms with Dutch translations, Terms with Esperanto translations, Terms with Estonian translations, Terms with Finnish translations, Terms with French translations, Terms with Galician translations, Terms with Georgian translations, Terms with German translations, Terms with Greek translations, Terms with Hebrew translations, Terms with Hindi translations, Terms with Hungarian translations, Terms with Icelandic translations, Terms with Indonesian translations, Terms with Irish translations, Terms with Italian translations, Terms with Japanese translations, Terms with Kannada translations, Terms with Kazakh translations, Terms with Korean translations, Terms with Latvian translations, Terms with Lithuanian translations, Terms with Macedonian translations, Terms with Malay translations, Terms with Malayalam translations, Terms with Mandarin translations, Terms with Norwegian Bokmål translations, Terms with Norwegian Nynorsk translations, Terms with Persian translations, Terms with Polish translations, Terms with Portuguese translations, Terms with Romanian translations, Terms with Russian translations, Terms with Serbo-Croatian translations, Terms with Slovak translations, Terms with Slovene translations, Terms with Spanish translations, Terms with Swedish translations, Terms with Tagalog translations, Terms with Tamil translations, Terms with Telugu translations, Terms with Thai translations, Terms with Turkish translations, Terms with Ukrainian translations, Terms with Urdu translations, Terms with Uzbek translations, Terms with Vietnamese translations Disambiguation of English entries with incorrect language header: 31 11 28 29 Disambiguation of English terms prefixed with half-: 26 19 29 26 Disambiguation of Entries with translation boxes: 42 12 22 24 Disambiguation of Pages with 1 entry: 29 12 29 30 Disambiguation of Pages with entries: 28 14 28 30 Disambiguation of Terms with Afrikaans translations: 29 18 25 28 Disambiguation of Terms with Arabic translations: 30 20 26 24 Disambiguation of Terms with Armenian translations: 29 18 25 28 Disambiguation of Terms with Azerbaijani translations: 29 18 25 28 Disambiguation of Terms with Belarusian translations: 30 19 25 27 Disambiguation of Terms with Bulgarian translations: 30 18 25 27 Disambiguation of Terms with Catalan translations: 30 19 25 27 Disambiguation of Terms with Czech translations: 32 18 25 25 Disambiguation of Terms with Danish translations: 38 17 22 23 Disambiguation of Terms with Dutch translations: 30 18 25 26 Disambiguation of Terms with Esperanto translations: 31 18 25 26 Disambiguation of Terms with Estonian translations: 29 18 25 28 Disambiguation of Terms with Finnish translations: 33 18 24 26 Disambiguation of Terms with French translations: 30 18 26 26 Disambiguation of Terms with Galician translations: 30 19 25 27 Disambiguation of Terms with Georgian translations: 31 19 24 26 Disambiguation of Terms with German translations: 33 18 24 25 Disambiguation of Terms with Greek translations: 33 22 23 22 Disambiguation of Terms with Hebrew translations: 30 19 25 26 Disambiguation of Terms with Hindi translations: 29 18 28 26 Disambiguation of Terms with Hungarian translations: 33 22 22 22 Disambiguation of Terms with Icelandic translations: 30 19 25 27 Disambiguation of Terms with Indonesian translations: 32 18 24 26 Disambiguation of Terms with Irish translations: 30 19 25 27 Disambiguation of Terms with Italian translations: 31 18 25 26 Disambiguation of Terms with Japanese translations: 31 18 25 26 Disambiguation of Terms with Kannada translations: 33 18 24 25 Disambiguation of Terms with Kazakh translations: 29 18 25 28 Disambiguation of Terms with Korean translations: 30 19 25 27 Disambiguation of Terms with Latvian translations: 29 18 25 28 Disambiguation of Terms with Lithuanian translations: 29 18 25 28 Disambiguation of Terms with Macedonian translations: 29 18 25 28 Disambiguation of Terms with Malay translations: 32 18 24 26 Disambiguation of Terms with Malayalam translations: 31 18 25 26 Disambiguation of Terms with Mandarin translations: 32 21 25 22 Disambiguation of Terms with Norwegian Bokmål translations: 30 19 25 27 Disambiguation of Terms with Norwegian Nynorsk translations: 27 20 25 27 Disambiguation of Terms with Persian translations: 29 18 25 28 Disambiguation of Terms with Polish translations: 29 18 27 27 Disambiguation of Terms with Portuguese translations: 33 17 24 26 Disambiguation of Terms with Romanian translations: 30 19 25 27 Disambiguation of Terms with Russian translations: 31 18 25 26 Disambiguation of Terms with Serbo-Croatian translations: 29 18 25 27 Disambiguation of Terms with Slovak translations: 29 18 25 28 Disambiguation of Terms with Slovene translations: 29 18 25 28 Disambiguation of Terms with Spanish translations: 29 19 25 27 Disambiguation of Terms with Swedish translations: 33 18 24 26 Disambiguation of Terms with Tagalog translations: 30 19 25 27 Disambiguation of Terms with Tamil translations: 29 18 25 28 Disambiguation of Terms with Telugu translations: 30 19 25 27 Disambiguation of Terms with Thai translations: 29 18 25 28 Disambiguation of Terms with Turkish translations: 33 18 24 26 Disambiguation of Terms with Ukrainian translations: 33 18 24 26 Disambiguation of Terms with Urdu translations: 31 18 25 26 Disambiguation of Terms with Uzbek translations: 29 18 25 28 Disambiguation of Terms with Vietnamese translations: 29 18 25 28 Topics: natural-sciences, physical-sciences, physics Disambiguation of 'time in physics': 41 18 21 20
  2. (chemistry) In a chemical reaction, the time required for the concentration of a reactant to fall from a chosen value to half that value. Categories (topical): Chemistry, Time
    Sense id: en-half-life-en-noun-8wD7eRzO Disambiguation of Time: 27 23 25 26 Categories (other): English entries with incorrect language header, English terms prefixed with half-, Pages with 1 entry, Pages with entries, Terms with Afrikaans translations, Terms with Arabic translations, Terms with Armenian translations, Terms with Azerbaijani translations, Terms with Belarusian translations, Terms with Bulgarian translations, Terms with Catalan translations, Terms with Dutch translations, Terms with Esperanto translations, Terms with Estonian translations, Terms with French translations, Terms with Galician translations, Terms with Georgian translations, Terms with Hebrew translations, Terms with Hindi translations, Terms with Icelandic translations, Terms with Indonesian translations, Terms with Irish translations, Terms with Italian translations, Terms with Japanese translations, Terms with Kazakh translations, Terms with Korean translations, Terms with Latvian translations, Terms with Lithuanian translations, Terms with Macedonian translations, Terms with Malay translations, Terms with Malayalam translations, Terms with Norwegian Bokmål translations, Terms with Norwegian Nynorsk translations, Terms with Persian translations, Terms with Polish translations, Terms with Romanian translations, Terms with Russian translations, Terms with Serbo-Croatian translations, Terms with Slovak translations, Terms with Slovene translations, Terms with Spanish translations, Terms with Tagalog translations, Terms with Tamil translations, Terms with Telugu translations, Terms with Thai translations, Terms with Urdu translations, Terms with Uzbek translations, Terms with Vietnamese translations Disambiguation of English entries with incorrect language header: 31 11 28 29 Disambiguation of English terms prefixed with half-: 26 19 29 26 Disambiguation of Pages with 1 entry: 29 12 29 30 Disambiguation of Pages with entries: 28 14 28 30 Disambiguation of Terms with Afrikaans translations: 29 18 25 28 Disambiguation of Terms with Arabic translations: 30 20 26 24 Disambiguation of Terms with Armenian translations: 29 18 25 28 Disambiguation of Terms with Azerbaijani translations: 29 18 25 28 Disambiguation of Terms with Belarusian translations: 30 19 25 27 Disambiguation of Terms with Bulgarian translations: 30 18 25 27 Disambiguation of Terms with Catalan translations: 30 19 25 27 Disambiguation of Terms with Dutch translations: 30 18 25 26 Disambiguation of Terms with Esperanto translations: 31 18 25 26 Disambiguation of Terms with Estonian translations: 29 18 25 28 Disambiguation of Terms with French translations: 30 18 26 26 Disambiguation of Terms with Galician translations: 30 19 25 27 Disambiguation of Terms with Georgian translations: 31 19 24 26 Disambiguation of Terms with Hebrew translations: 30 19 25 26 Disambiguation of Terms with Hindi translations: 29 18 28 26 Disambiguation of Terms with Icelandic translations: 30 19 25 27 Disambiguation of Terms with Indonesian translations: 32 18 24 26 Disambiguation of Terms with Irish translations: 30 19 25 27 Disambiguation of Terms with Italian translations: 31 18 25 26 Disambiguation of Terms with Japanese translations: 31 18 25 26 Disambiguation of Terms with Kazakh translations: 29 18 25 28 Disambiguation of Terms with Korean translations: 30 19 25 27 Disambiguation of Terms with Latvian translations: 29 18 25 28 Disambiguation of Terms with Lithuanian translations: 29 18 25 28 Disambiguation of Terms with Macedonian translations: 29 18 25 28 Disambiguation of Terms with Malay translations: 32 18 24 26 Disambiguation of Terms with Malayalam translations: 31 18 25 26 Disambiguation of Terms with Norwegian Bokmål translations: 30 19 25 27 Disambiguation of Terms with Norwegian Nynorsk translations: 27 20 25 27 Disambiguation of Terms with Persian translations: 29 18 25 28 Disambiguation of Terms with Polish translations: 29 18 27 27 Disambiguation of Terms with Romanian translations: 30 19 25 27 Disambiguation of Terms with Russian translations: 31 18 25 26 Disambiguation of Terms with Serbo-Croatian translations: 29 18 25 27 Disambiguation of Terms with Slovak translations: 29 18 25 28 Disambiguation of Terms with Slovene translations: 29 18 25 28 Disambiguation of Terms with Spanish translations: 29 19 25 27 Disambiguation of Terms with Tagalog translations: 30 19 25 27 Disambiguation of Terms with Tamil translations: 29 18 25 28 Disambiguation of Terms with Telugu translations: 30 19 25 27 Disambiguation of Terms with Thai translations: 29 18 25 28 Disambiguation of Terms with Urdu translations: 31 18 25 26 Disambiguation of Terms with Uzbek translations: 29 18 25 28 Disambiguation of Terms with Vietnamese translations: 29 18 25 28 Topics: chemistry, natural-sciences, physical-sciences
  3. (medicine) The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacological, physiologic, or radiological activity. Categories (topical): Medicine, Time Translations (medicine: time for a substance to lose half of its activity): semivida [feminine] (Catalan), puoliintumisaika (Finnish), waktu paruh (Indonesian), 半減期 (hangenki) (alt: はんげんき) (Japanese), separuh hayat (Malay), halveringstid [feminine, masculine] (Norwegian Bokmål), halveringstid [feminine] (Norwegian Nynorsk), пери́од полувыведе́ния (períod poluvyvedénija) [masculine] (Russian)
    Sense id: en-half-life-en-noun-i5kkIgI- Disambiguation of Time: 27 23 25 26 Categories (other): English entries with incorrect language header, English terms prefixed with half-, Pages with 1 entry, Pages with entries, Terms with Afrikaans translations, Terms with Arabic translations, Terms with Armenian translations, Terms with Azerbaijani translations, Terms with Belarusian translations, Terms with Bulgarian translations, Terms with Catalan translations, Terms with Dutch translations, Terms with Esperanto translations, Terms with Estonian translations, Terms with French translations, Terms with Galician translations, Terms with Georgian translations, Terms with Hebrew translations, Terms with Hindi translations, Terms with Icelandic translations, Terms with Indonesian translations, Terms with Irish translations, Terms with Italian translations, Terms with Japanese translations, Terms with Kazakh translations, Terms with Korean translations, Terms with Latvian translations, Terms with Lithuanian translations, Terms with Macedonian translations, Terms with Malay translations, Terms with Malayalam translations, Terms with Norwegian Bokmål translations, Terms with Norwegian Nynorsk translations, Terms with Persian translations, Terms with Polish translations, Terms with Romanian translations, Terms with Russian translations, Terms with Serbo-Croatian translations, Terms with Slovak translations, Terms with Slovene translations, Terms with Spanish translations, Terms with Tagalog translations, Terms with Tamil translations, Terms with Telugu translations, Terms with Thai translations, Terms with Urdu translations, Terms with Uzbek translations, Terms with Vietnamese translations Disambiguation of English entries with incorrect language header: 31 11 28 29 Disambiguation of English terms prefixed with half-: 26 19 29 26 Disambiguation of Pages with 1 entry: 29 12 29 30 Disambiguation of Pages with entries: 28 14 28 30 Disambiguation of Terms with Afrikaans translations: 29 18 25 28 Disambiguation of Terms with Arabic translations: 30 20 26 24 Disambiguation of Terms with Armenian translations: 29 18 25 28 Disambiguation of Terms with Azerbaijani translations: 29 18 25 28 Disambiguation of Terms with Belarusian translations: 30 19 25 27 Disambiguation of Terms with Bulgarian translations: 30 18 25 27 Disambiguation of Terms with Catalan translations: 30 19 25 27 Disambiguation of Terms with Dutch translations: 30 18 25 26 Disambiguation of Terms with Esperanto translations: 31 18 25 26 Disambiguation of Terms with Estonian translations: 29 18 25 28 Disambiguation of Terms with French translations: 30 18 26 26 Disambiguation of Terms with Galician translations: 30 19 25 27 Disambiguation of Terms with Georgian translations: 31 19 24 26 Disambiguation of Terms with Hebrew translations: 30 19 25 26 Disambiguation of Terms with Hindi translations: 29 18 28 26 Disambiguation of Terms with Icelandic translations: 30 19 25 27 Disambiguation of Terms with Indonesian translations: 32 18 24 26 Disambiguation of Terms with Irish translations: 30 19 25 27 Disambiguation of Terms with Italian translations: 31 18 25 26 Disambiguation of Terms with Japanese translations: 31 18 25 26 Disambiguation of Terms with Kazakh translations: 29 18 25 28 Disambiguation of Terms with Korean translations: 30 19 25 27 Disambiguation of Terms with Latvian translations: 29 18 25 28 Disambiguation of Terms with Lithuanian translations: 29 18 25 28 Disambiguation of Terms with Macedonian translations: 29 18 25 28 Disambiguation of Terms with Malay translations: 32 18 24 26 Disambiguation of Terms with Malayalam translations: 31 18 25 26 Disambiguation of Terms with Norwegian Bokmål translations: 30 19 25 27 Disambiguation of Terms with Norwegian Nynorsk translations: 27 20 25 27 Disambiguation of Terms with Persian translations: 29 18 25 28 Disambiguation of Terms with Polish translations: 29 18 27 27 Disambiguation of Terms with Romanian translations: 30 19 25 27 Disambiguation of Terms with Russian translations: 31 18 25 26 Disambiguation of Terms with Serbo-Croatian translations: 29 18 25 27 Disambiguation of Terms with Slovak translations: 29 18 25 28 Disambiguation of Terms with Slovene translations: 29 18 25 28 Disambiguation of Terms with Spanish translations: 29 19 25 27 Disambiguation of Terms with Tagalog translations: 30 19 25 27 Disambiguation of Terms with Tamil translations: 29 18 25 28 Disambiguation of Terms with Telugu translations: 30 19 25 27 Disambiguation of Terms with Thai translations: 29 18 25 28 Disambiguation of Terms with Urdu translations: 31 18 25 26 Disambiguation of Terms with Uzbek translations: 29 18 25 28 Disambiguation of Terms with Vietnamese translations: 29 18 25 28 Topics: medicine, sciences Disambiguation of 'medicine: time for a substance to lose half of its activity': 17 14 43 26
  4. The time it takes for an idea or a fashion to lose half of its influential power. Categories (topical): Time Translations (time to lose half of influential power of an idea or fashion): puoliintumisaika (Finnish)
    Sense id: en-half-life-en-noun-QgVvoO90 Disambiguation of Time: 27 23 25 26 Categories (other): English entries with incorrect language header, English terms prefixed with half-, Pages with 1 entry, Pages with entries, Terms with Afrikaans translations, Terms with Arabic translations, Terms with Armenian translations, Terms with Azerbaijani translations, Terms with Belarusian translations, Terms with Bulgarian translations, Terms with Catalan translations, Terms with Dutch translations, Terms with Esperanto translations, Terms with Estonian translations, Terms with French translations, Terms with Galician translations, Terms with Georgian translations, Terms with Hebrew translations, Terms with Hindi translations, Terms with Icelandic translations, Terms with Indonesian translations, Terms with Irish translations, Terms with Italian translations, Terms with Japanese translations, Terms with Kazakh translations, Terms with Korean translations, Terms with Latvian translations, Terms with Lithuanian translations, Terms with Macedonian translations, Terms with Malay translations, Terms with Malayalam translations, Terms with Norwegian Bokmål translations, Terms with Norwegian Nynorsk translations, Terms with Persian translations, Terms with Polish translations, Terms with Romanian translations, Terms with Russian translations, Terms with Serbo-Croatian translations, Terms with Slovak translations, Terms with Slovene translations, Terms with Spanish translations, Terms with Tagalog translations, Terms with Tamil translations, Terms with Telugu translations, Terms with Thai translations, Terms with Urdu translations, Terms with Uzbek translations, Terms with Vietnamese translations Disambiguation of English entries with incorrect language header: 31 11 28 29 Disambiguation of English terms prefixed with half-: 26 19 29 26 Disambiguation of Pages with 1 entry: 29 12 29 30 Disambiguation of Pages with entries: 28 14 28 30 Disambiguation of Terms with Afrikaans translations: 29 18 25 28 Disambiguation of Terms with Arabic translations: 30 20 26 24 Disambiguation of Terms with Armenian translations: 29 18 25 28 Disambiguation of Terms with Azerbaijani translations: 29 18 25 28 Disambiguation of Terms with Belarusian translations: 30 19 25 27 Disambiguation of Terms with Bulgarian translations: 30 18 25 27 Disambiguation of Terms with Catalan translations: 30 19 25 27 Disambiguation of Terms with Dutch translations: 30 18 25 26 Disambiguation of Terms with Esperanto translations: 31 18 25 26 Disambiguation of Terms with Estonian translations: 29 18 25 28 Disambiguation of Terms with French translations: 30 18 26 26 Disambiguation of Terms with Galician translations: 30 19 25 27 Disambiguation of Terms with Georgian translations: 31 19 24 26 Disambiguation of Terms with Hebrew translations: 30 19 25 26 Disambiguation of Terms with Hindi translations: 29 18 28 26 Disambiguation of Terms with Icelandic translations: 30 19 25 27 Disambiguation of Terms with Indonesian translations: 32 18 24 26 Disambiguation of Terms with Irish translations: 30 19 25 27 Disambiguation of Terms with Italian translations: 31 18 25 26 Disambiguation of Terms with Japanese translations: 31 18 25 26 Disambiguation of Terms with Kazakh translations: 29 18 25 28 Disambiguation of Terms with Korean translations: 30 19 25 27 Disambiguation of Terms with Latvian translations: 29 18 25 28 Disambiguation of Terms with Lithuanian translations: 29 18 25 28 Disambiguation of Terms with Macedonian translations: 29 18 25 28 Disambiguation of Terms with Malay translations: 32 18 24 26 Disambiguation of Terms with Malayalam translations: 31 18 25 26 Disambiguation of Terms with Norwegian Bokmål translations: 30 19 25 27 Disambiguation of Terms with Norwegian Nynorsk translations: 27 20 25 27 Disambiguation of Terms with Persian translations: 29 18 25 28 Disambiguation of Terms with Polish translations: 29 18 27 27 Disambiguation of Terms with Romanian translations: 30 19 25 27 Disambiguation of Terms with Russian translations: 31 18 25 26 Disambiguation of Terms with Serbo-Croatian translations: 29 18 25 27 Disambiguation of Terms with Slovak translations: 29 18 25 28 Disambiguation of Terms with Slovene translations: 29 18 25 28 Disambiguation of Terms with Spanish translations: 29 19 25 27 Disambiguation of Terms with Tagalog translations: 30 19 25 27 Disambiguation of Terms with Tamil translations: 29 18 25 28 Disambiguation of Terms with Telugu translations: 30 19 25 27 Disambiguation of Terms with Thai translations: 29 18 25 28 Disambiguation of Terms with Urdu translations: 31 18 25 26 Disambiguation of Terms with Uzbek translations: 29 18 25 28 Disambiguation of Terms with Vietnamese translations: 29 18 25 28 Disambiguation of 'time to lose half of influential power of an idea or fashion': 17 15 27 40
The following are not (yet) sense-disambiguated
Translations (chemistry: time required for concentration to fall to half): semivida [feminine] (Catalan), puoliintumisaika (Finnish), demi-vie [feminine] (French), Halbwertszeit [feminine] (German), felezési idő (Hungarian), waktu paruh (Indonesian), emivita [feminine] (Italian), semivita [feminine] (Italian), 半減期 (hangenki) (alt: はんげんき) (Japanese), separuh hayat (Malay), пери́од полужи́зни (períod polužízni) [masculine] (Russian), semivida (Spanish), kalahatimbuhay (Tagalog)
Disambiguation of 'chemistry: time required for concentration to fall to half': 29 34 18 19

Inflected forms

Alternative forms

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          "kind": "other",
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          "source": "w+disamb"
        },
        {
          "_dis": "31 18 25 26",
          "kind": "other",
          "name": "Terms with Italian translations",
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          "source": "w+disamb"
        },
        {
          "_dis": "31 18 25 26",
          "kind": "other",
          "name": "Terms with Japanese translations",
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          "source": "w+disamb"
        },
        {
          "_dis": "33 18 24 25",
          "kind": "other",
          "name": "Terms with Kannada translations",
          "parents": [],
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        },
        {
          "_dis": "29 18 25 28",
          "kind": "other",
          "name": "Terms with Kazakh translations",
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          "source": "w+disamb"
        },
        {
          "_dis": "30 19 25 27",
          "kind": "other",
          "name": "Terms with Korean translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "29 18 25 28",
          "kind": "other",
          "name": "Terms with Latvian translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "29 18 25 28",
          "kind": "other",
          "name": "Terms with Lithuanian translations",
          "parents": [],
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        },
        {
          "_dis": "29 18 25 28",
          "kind": "other",
          "name": "Terms with Macedonian translations",
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        },
        {
          "_dis": "32 18 24 26",
          "kind": "other",
          "name": "Terms with Malay translations",
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        },
        {
          "_dis": "31 18 25 26",
          "kind": "other",
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          "source": "w+disamb"
        },
        {
          "_dis": "32 21 25 22",
          "kind": "other",
          "name": "Terms with Mandarin translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "30 19 25 27",
          "kind": "other",
          "name": "Terms with Norwegian Bokmål translations",
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          "source": "w+disamb"
        },
        {
          "_dis": "27 20 25 27",
          "kind": "other",
          "name": "Terms with Norwegian Nynorsk translations",
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          "source": "w+disamb"
        },
        {
          "_dis": "29 18 25 28",
          "kind": "other",
          "name": "Terms with Persian translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "29 18 27 27",
          "kind": "other",
          "name": "Terms with Polish translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "33 17 24 26",
          "kind": "other",
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          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "30 19 25 27",
          "kind": "other",
          "name": "Terms with Romanian translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "31 18 25 26",
          "kind": "other",
          "name": "Terms with Russian translations",
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        },
        {
          "_dis": "29 18 25 27",
          "kind": "other",
          "name": "Terms with Serbo-Croatian translations",
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        },
        {
          "_dis": "29 18 25 28",
          "kind": "other",
          "name": "Terms with Slovak translations",
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        {
          "_dis": "29 18 25 28",
          "kind": "other",
          "name": "Terms with Slovene translations",
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          "source": "w+disamb"
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        {
          "_dis": "29 19 25 27",
          "kind": "other",
          "name": "Terms with Spanish translations",
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        },
        {
          "_dis": "33 18 24 26",
          "kind": "other",
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        {
          "_dis": "30 19 25 27",
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        {
          "_dis": "29 18 25 28",
          "kind": "other",
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        {
          "_dis": "30 19 25 27",
          "kind": "other",
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        {
          "_dis": "29 18 25 28",
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        {
          "_dis": "33 18 24 26",
          "kind": "other",
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        {
          "_dis": "33 18 24 26",
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        {
          "_dis": "31 18 25 26",
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          "_dis": "29 18 25 28",
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          "_dis": "29 18 25 28",
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          "name": "Terms with Vietnamese translations",
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        },
        {
          "_dis": "38 18 23 22",
          "kind": "topical",
          "langcode": "en",
          "name": "Physical quantities",
          "orig": "en:Physical quantities",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "57 12 25 6",
          "kind": "topical",
          "langcode": "en",
          "name": "Radioactivity",
          "orig": "en:Radioactivity",
          "parents": [
            "Nuclear physics",
            "Radiation",
            "Physics",
            "Quantum mechanics",
            "Energy",
            "Sciences",
            "Nature",
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        {
          "_dis": "27 23 25 26",
          "kind": "topical",
          "langcode": "en",
          "name": "Time",
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          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The time required for half the nuclei in a sample of an isotope to undergo radioactive decay."
      ],
      "id": "en-half-life-en-noun-yQIEIhfg",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "nuclei",
          "nucleus"
        ],
        [
          "sample",
          "sample"
        ],
        [
          "isotope",
          "isotope"
        ],
        [
          "radioactive decay",
          "radioactive decay"
        ]
      ],
      "raw_glosses": [
        "(physics) The time required for half the nuclei in a sample of an isotope to undergo radioactive decay."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "translations": [
        {
          "_dis1": "41 18 21 20",
          "code": "hy",
          "lang": "Armenian",
          "roman": "kisatrohman parberutʻyun",
          "sense": "time in physics",
          "word": "կիսատրոհման պարբերություն"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "az",
          "lang": "Azerbaijani",
          "sense": "time in physics",
          "word": "yarımdağılma dövrü"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "be",
          "lang": "Belarusian",
          "roman": "pjeryjad paŭraspadu",
          "sense": "time in physics",
          "tags": [
            "neuter"
          ],
          "word": "перыяд паўраспаду"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "bg",
          "lang": "Bulgarian",
          "roman": "period na polurazpad",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "период на полуразпад"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ca",
          "lang": "Catalan",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "període de semidesintegració"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ca",
          "lang": "Catalan",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "període radioactiu"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "bànshuāiqī",
          "sense": "time in physics",
          "word": "半衰期"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "cs",
          "lang": "Czech",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "poločas rozpadu"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "da",
          "lang": "Danish",
          "sense": "time in physics",
          "tags": [
            "common-gender"
          ],
          "word": "halveringstid"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "nl",
          "lang": "Dutch",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "halfwaardetijd"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "nl",
          "lang": "Dutch",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "halveringstijd"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "eo",
          "lang": "Esperanto",
          "sense": "time in physics",
          "word": "duoniĝa tempo"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "et",
          "lang": "Estonian",
          "sense": "time in physics",
          "word": "poolestusaeg"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "fi",
          "lang": "Finnish",
          "sense": "time in physics",
          "word": "puoliintumisaika"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "fr",
          "lang": "French",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "demi-vie"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "gl",
          "lang": "Galician",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "período de semidesintegración"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ka",
          "lang": "Georgian",
          "roman": "naxevardašlis ṗeriodi",
          "sense": "time in physics",
          "word": "ნახევარდაშლის პერიოდი"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ka",
          "lang": "Georgian",
          "roman": "naxevrad dašlis ṗeriodi",
          "sense": "time in physics",
          "word": "ნახევრად დაშლის პერიოდი"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "de",
          "lang": "German",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "Halbwertszeit"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "el",
          "lang": "Greek",
          "roman": "chrónos imizoḯs",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "χρόνος ημιζωής"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "hi",
          "lang": "Hindi",
          "roman": "ardhāyu",
          "sense": "time in physics",
          "word": "अर्धायु"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "hu",
          "lang": "Hungarian",
          "sense": "time in physics",
          "word": "felezési idő"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "is",
          "lang": "Icelandic",
          "sense": "time in physics",
          "word": "helmingunartími"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "id",
          "lang": "Indonesian",
          "sense": "time in physics",
          "word": "waktu paruh"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ga",
          "lang": "Irish",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "leathré"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "it",
          "lang": "Italian",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "emivita"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "it",
          "lang": "Italian",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "semivita"
        },
        {
          "_dis1": "41 18 21 20",
          "alt": "はんげんき",
          "code": "ja",
          "lang": "Japanese",
          "roman": "hangenki",
          "sense": "time in physics",
          "word": "半減期"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "kn",
          "lang": "Kannada",
          "roman": "ardhāyuṣya",
          "sense": "time in physics",
          "word": "ಅರ್ಧಾಯುಷ್ಯ"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "kk",
          "lang": "Kazakh",
          "roman": "jartylai ydyrau merzımı",
          "sense": "time in physics",
          "word": "жартылай ыдырау мерзімі"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ko",
          "lang": "Korean",
          "roman": "ban'gamgi",
          "sense": "time in physics",
          "word": "반감기"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "lv",
          "lang": "Latvian",
          "sense": "time in physics",
          "word": "pussabrukšanas periods"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "lt",
          "lang": "Lithuanian",
          "sense": "time in physics",
          "word": "pusėjimo trukmė"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "mk",
          "lang": "Macedonian",
          "roman": "period na poluraspad",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "период на полураспад"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ms",
          "lang": "Malay",
          "sense": "time in physics",
          "word": "separuh hayat"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ml",
          "lang": "Malayalam",
          "roman": "aṟddhāyussŭ",
          "sense": "time in physics",
          "word": "അർദ്ധായുസ്സ്"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "nb",
          "lang": "Norwegian Bokmål",
          "sense": "time in physics",
          "tags": [
            "feminine",
            "masculine"
          ],
          "word": "halveringstid"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "nn",
          "lang": "Norwegian Nynorsk",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "halveringstid"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "fa",
          "lang": "Persian",
          "roman": "nime-'omr",
          "sense": "time in physics",
          "word": "نیمهعمر"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "pl",
          "lang": "Polish",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "czas połowicznego rozpadu"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "pl",
          "lang": "Polish",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "okres połowicznego rozpadu"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "pt",
          "lang": "Portuguese",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "meia-vida"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "pt",
          "lang": "Portuguese",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "semivida"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ro",
          "lang": "Romanian",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "perioadă de înjumătățire"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ru",
          "lang": "Russian",
          "roman": "períod poluraspáda",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "пери́од полураспа́да"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "sh",
          "lang": "Serbo-Croatian",
          "sense": "time in physics",
          "tags": [
            "Roman",
            "neuter"
          ],
          "word": "vreme poluraspada"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "sk",
          "lang": "Slovak",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "polčas premeny"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "sl",
          "lang": "Slovene",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "razpolovni čas"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "es",
          "lang": "Spanish",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "periodo de semidesintegración"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "es",
          "lang": "Spanish",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "semivida"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "es",
          "lang": "Spanish",
          "sense": "time in physics",
          "tags": [
            "feminine"
          ],
          "word": "vida media"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "sv",
          "lang": "Swedish",
          "sense": "time in physics",
          "tags": [
            "common-gender"
          ],
          "word": "halveringstid"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "tl",
          "lang": "Tagalog",
          "sense": "time in physics",
          "word": "kalahatimbuhay"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "ta",
          "lang": "Tamil",
          "roman": "araivāḻvuk kālam",
          "sense": "time in physics",
          "word": "அரைவாழ்வுக் காலம்"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "te",
          "lang": "Telugu",
          "roman": "artha jīvitakālaṁ",
          "sense": "time in physics",
          "word": "అర్థ జీవితకాలం"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "th",
          "lang": "Thai",
          "sense": "time in physics",
          "word": "ครึ่งชีวิต"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "uk",
          "lang": "Ukrainian",
          "roman": "períod napivrózpadu",
          "sense": "time in physics",
          "tags": [
            "masculine"
          ],
          "word": "пері́од напівро́зпаду"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "uz",
          "lang": "Uzbek",
          "sense": "time in physics",
          "word": "yarim yemirilish davri"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "vi",
          "lang": "Vietnamese",
          "sense": "time in physics",
          "word": "chu kì bán rã"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "vi",
          "lang": "Vietnamese",
          "sense": "time in physics",
          "word": "chu kỳ bán rã"
        },
        {
          "_dis1": "41 18 21 20",
          "code": "vi",
          "lang": "Vietnamese",
          "sense": "time in physics",
          "word": "chu kỳ nửa phân rã"
        }
      ]
    },
    {
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          "kind": "topical",
          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
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            "All topics",
            "Fundamental"
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            "Entries with incorrect language header",
            "Entry maintenance"
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          "name": "Terms with Galician translations",
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        },
        {
          "_dis": "31 19 24 26",
          "kind": "other",
          "name": "Terms with Georgian translations",
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        },
        {
          "_dis": "30 19 25 26",
          "kind": "other",
          "name": "Terms with Hebrew translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "29 18 28 26",
          "kind": "other",
          "name": "Terms with Hindi translations",
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          "source": "w+disamb"
        },
        {
          "_dis": "30 19 25 27",
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        {
          "_dis": "32 18 24 26",
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        },
        {
          "_dis": "30 19 25 27",
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          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "31 18 25 26",
          "kind": "other",
          "name": "Terms with Italian translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "31 18 25 26",
          "kind": "other",
          "name": "Terms with Japanese translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "29 18 25 28",
          "kind": "other",
          "name": "Terms with Kazakh translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "30 19 25 27",
          "kind": "other",
          "name": "Terms with Korean translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "29 18 25 28",
          "kind": "other",
          "name": "Terms with Latvian translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "29 18 25 28",
          "kind": "other",
          "name": "Terms with Lithuanian translations",
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          "source": "w+disamb"
        },
        {
          "_dis": "29 18 25 28",
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          "source": "w+disamb"
        },
        {
          "_dis": "32 18 24 26",
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          "_dis": "29 18 25 28",
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        {
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          "name": "Terms with Slovene translations",
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        {
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        },
        {
          "_dis": "29 18 25 28",
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        },
        {
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        {
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        },
        {
          "_dis": "31 18 25 26",
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        },
        {
          "_dis": "29 18 25 28",
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        {
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        },
        {
          "_dis": "27 23 25 26",
          "kind": "topical",
          "langcode": "en",
          "name": "Time",
          "orig": "en:Time",
          "parents": [
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "ref": "1991, Robert Ackerman, Introduction to Jane Ellen Harrison's Prolegomena to the Study of Greek Religion (1903)",
          "text": "Most books of scholarship have surprisingly short intellectual half-lives during which they make a difference\""
        }
      ],
      "glosses": [
        "The time it takes for an idea or a fashion to lose half of its influential power."
      ],
      "id": "en-half-life-en-noun-QgVvoO90",
      "translations": [
        {
          "_dis1": "17 15 27 40",
          "code": "fi",
          "lang": "Finnish",
          "sense": "time to lose half of influential power of an idea or fashion",
          "word": "puoliintumisaika"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈhæfˌlaɪf/",
      "tags": [
        "US"
      ]
    },
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  ],
  "translations": [
    {
      "_dis1": "29 34 18 19",
      "code": "ca",
      "lang": "Catalan",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "feminine"
      ],
      "word": "semivida"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "fi",
      "lang": "Finnish",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "puoliintumisaika"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "fr",
      "lang": "French",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "feminine"
      ],
      "word": "demi-vie"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "de",
      "lang": "German",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "feminine"
      ],
      "word": "Halbwertszeit"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "hu",
      "lang": "Hungarian",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "felezési idő"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "id",
      "lang": "Indonesian",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "waktu paruh"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "it",
      "lang": "Italian",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "feminine"
      ],
      "word": "emivita"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "it",
      "lang": "Italian",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "feminine"
      ],
      "word": "semivita"
    },
    {
      "_dis1": "29 34 18 19",
      "alt": "はんげんき",
      "code": "ja",
      "lang": "Japanese",
      "roman": "hangenki",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "半減期"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "ms",
      "lang": "Malay",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "separuh hayat"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "ru",
      "lang": "Russian",
      "roman": "períod polužízni",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "masculine"
      ],
      "word": "пери́од полужи́зни"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "es",
      "lang": "Spanish",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "semivida"
    },
    {
      "_dis1": "29 34 18 19",
      "code": "tl",
      "lang": "Tagalog",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "kalahatimbuhay"
    }
  ],
  "wikipedia": [
    "half-life"
  ],
  "word": "half-life"
}
{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English nouns with irregular plurals",
    "English terms prefixed with half-",
    "Entries with translation boxes",
    "Pages with 1 entry",
    "Pages with entries",
    "Requests for review of Afrikaans translations",
    "Requests for review of Hebrew translations",
    "Requests for review of Turkish translations",
    "Requests for review of Urdu translations",
    "Terms with Afrikaans translations",
    "Terms with Arabic translations",
    "Terms with Armenian translations",
    "Terms with Azerbaijani translations",
    "Terms with Belarusian translations",
    "Terms with Bulgarian translations",
    "Terms with Catalan translations",
    "Terms with Czech translations",
    "Terms with Danish translations",
    "Terms with Dutch translations",
    "Terms with Esperanto translations",
    "Terms with Estonian translations",
    "Terms with Finnish translations",
    "Terms with French translations",
    "Terms with Galician translations",
    "Terms with Georgian translations",
    "Terms with German translations",
    "Terms with Greek translations",
    "Terms with Hebrew translations",
    "Terms with Hindi translations",
    "Terms with Hungarian translations",
    "Terms with Icelandic translations",
    "Terms with Indonesian translations",
    "Terms with Irish translations",
    "Terms with Italian translations",
    "Terms with Japanese translations",
    "Terms with Kannada translations",
    "Terms with Kazakh translations",
    "Terms with Korean translations",
    "Terms with Latvian translations",
    "Terms with Lithuanian translations",
    "Terms with Macedonian translations",
    "Terms with Malay translations",
    "Terms with Malayalam translations",
    "Terms with Mandarin translations",
    "Terms with Norwegian Bokmål translations",
    "Terms with Norwegian Nynorsk translations",
    "Terms with Persian translations",
    "Terms with Polish translations",
    "Terms with Portuguese translations",
    "Terms with Romanian translations",
    "Terms with Russian translations",
    "Terms with Serbo-Croatian translations",
    "Terms with Slovak translations",
    "Terms with Slovene translations",
    "Terms with Spanish translations",
    "Terms with Swedish translations",
    "Terms with Tagalog translations",
    "Terms with Tamil translations",
    "Terms with Telugu translations",
    "Terms with Thai translations",
    "Terms with Turkish translations",
    "Terms with Ukrainian translations",
    "Terms with Urdu translations",
    "Terms with Uzbek translations",
    "Terms with Vietnamese translations",
    "en:Physical quantities",
    "en:Radioactivity",
    "en:Time"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "half",
        "3": "life"
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      "expansion": "half- + life",
      "name": "prefix"
    }
  ],
  "etymology_text": "From half- + life.",
  "forms": [
    {
      "form": "half-lives",
      "tags": [
        "plural"
      ]
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  ],
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      "args": {
        "1": "half-lives"
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      "expansion": "half-life (plural half-lives)",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "en:Physics"
      ],
      "glosses": [
        "The time required for half the nuclei in a sample of an isotope to undergo radioactive decay."
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "nuclei",
          "nucleus"
        ],
        [
          "sample",
          "sample"
        ],
        [
          "isotope",
          "isotope"
        ],
        [
          "radioactive decay",
          "radioactive decay"
        ]
      ],
      "raw_glosses": [
        "(physics) The time required for half the nuclei in a sample of an isotope to undergo radioactive decay."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    },
    {
      "categories": [
        "en:Chemistry"
      ],
      "glosses": [
        "In a chemical reaction, the time required for the concentration of a reactant to fall from a chosen value to half that value."
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ]
      ],
      "raw_glosses": [
        "(chemistry) In a chemical reaction, the time required for the concentration of a reactant to fall from a chosen value to half that value."
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "categories": [
        "en:Medicine"
      ],
      "glosses": [
        "The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacological, physiologic, or radiological activity."
      ],
      "links": [
        [
          "medicine",
          "medicine"
        ]
      ],
      "raw_glosses": [
        "(medicine) The time it takes for a substance (drug, radioactive nuclide, or other) to lose half of its pharmacological, physiologic, or radiological activity."
      ],
      "topics": [
        "medicine",
        "sciences"
      ]
    },
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      "examples": [
        {
          "ref": "1991, Robert Ackerman, Introduction to Jane Ellen Harrison's Prolegomena to the Study of Greek Religion (1903)",
          "text": "Most books of scholarship have surprisingly short intellectual half-lives during which they make a difference\""
        }
      ],
      "glosses": [
        "The time it takes for an idea or a fashion to lose half of its influential power."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈhæfˌlaɪf/",
      "tags": [
        "US"
      ]
    },
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  ],
  "translations": [
    {
      "code": "hy",
      "lang": "Armenian",
      "roman": "kisatrohman parberutʻyun",
      "sense": "time in physics",
      "word": "կիսատրոհման պարբերություն"
    },
    {
      "code": "az",
      "lang": "Azerbaijani",
      "sense": "time in physics",
      "word": "yarımdağılma dövrü"
    },
    {
      "code": "be",
      "lang": "Belarusian",
      "roman": "pjeryjad paŭraspadu",
      "sense": "time in physics",
      "tags": [
        "neuter"
      ],
      "word": "перыяд паўраспаду"
    },
    {
      "code": "bg",
      "lang": "Bulgarian",
      "roman": "period na polurazpad",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "период на полуразпад"
    },
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "període de semidesintegració"
    },
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "període radioactiu"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "bànshuāiqī",
      "sense": "time in physics",
      "word": "半衰期"
    },
    {
      "code": "cs",
      "lang": "Czech",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "poločas rozpadu"
    },
    {
      "code": "da",
      "lang": "Danish",
      "sense": "time in physics",
      "tags": [
        "common-gender"
      ],
      "word": "halveringstid"
    },
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "halfwaardetijd"
    },
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "halveringstijd"
    },
    {
      "code": "eo",
      "lang": "Esperanto",
      "sense": "time in physics",
      "word": "duoniĝa tempo"
    },
    {
      "code": "et",
      "lang": "Estonian",
      "sense": "time in physics",
      "word": "poolestusaeg"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "time in physics",
      "word": "puoliintumisaika"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "demi-vie"
    },
    {
      "code": "gl",
      "lang": "Galician",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "período de semidesintegración"
    },
    {
      "code": "ka",
      "lang": "Georgian",
      "roman": "naxevardašlis ṗeriodi",
      "sense": "time in physics",
      "word": "ნახევარდაშლის პერიოდი"
    },
    {
      "code": "ka",
      "lang": "Georgian",
      "roman": "naxevrad dašlis ṗeriodi",
      "sense": "time in physics",
      "word": "ნახევრად დაშლის პერიოდი"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "Halbwertszeit"
    },
    {
      "code": "el",
      "lang": "Greek",
      "roman": "chrónos imizoḯs",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "χρόνος ημιζωής"
    },
    {
      "code": "hi",
      "lang": "Hindi",
      "roman": "ardhāyu",
      "sense": "time in physics",
      "word": "अर्धायु"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "time in physics",
      "word": "felezési idő"
    },
    {
      "code": "is",
      "lang": "Icelandic",
      "sense": "time in physics",
      "word": "helmingunartími"
    },
    {
      "code": "id",
      "lang": "Indonesian",
      "sense": "time in physics",
      "word": "waktu paruh"
    },
    {
      "code": "ga",
      "lang": "Irish",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "leathré"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "emivita"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "semivita"
    },
    {
      "alt": "はんげんき",
      "code": "ja",
      "lang": "Japanese",
      "roman": "hangenki",
      "sense": "time in physics",
      "word": "半減期"
    },
    {
      "code": "kn",
      "lang": "Kannada",
      "roman": "ardhāyuṣya",
      "sense": "time in physics",
      "word": "ಅರ್ಧಾಯುಷ್ಯ"
    },
    {
      "code": "kk",
      "lang": "Kazakh",
      "roman": "jartylai ydyrau merzımı",
      "sense": "time in physics",
      "word": "жартылай ыдырау мерзімі"
    },
    {
      "code": "ko",
      "lang": "Korean",
      "roman": "ban'gamgi",
      "sense": "time in physics",
      "word": "반감기"
    },
    {
      "code": "lv",
      "lang": "Latvian",
      "sense": "time in physics",
      "word": "pussabrukšanas periods"
    },
    {
      "code": "lt",
      "lang": "Lithuanian",
      "sense": "time in physics",
      "word": "pusėjimo trukmė"
    },
    {
      "code": "mk",
      "lang": "Macedonian",
      "roman": "period na poluraspad",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "период на полураспад"
    },
    {
      "code": "ms",
      "lang": "Malay",
      "sense": "time in physics",
      "word": "separuh hayat"
    },
    {
      "code": "ml",
      "lang": "Malayalam",
      "roman": "aṟddhāyussŭ",
      "sense": "time in physics",
      "word": "അർദ്ധായുസ്സ്"
    },
    {
      "code": "nb",
      "lang": "Norwegian Bokmål",
      "sense": "time in physics",
      "tags": [
        "feminine",
        "masculine"
      ],
      "word": "halveringstid"
    },
    {
      "code": "nn",
      "lang": "Norwegian Nynorsk",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "halveringstid"
    },
    {
      "code": "fa",
      "lang": "Persian",
      "roman": "nime-'omr",
      "sense": "time in physics",
      "word": "نیمهعمر"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "czas połowicznego rozpadu"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "okres połowicznego rozpadu"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "meia-vida"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "semivida"
    },
    {
      "code": "ro",
      "lang": "Romanian",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "perioadă de înjumătățire"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "períod poluraspáda",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "пери́од полураспа́да"
    },
    {
      "code": "sh",
      "lang": "Serbo-Croatian",
      "sense": "time in physics",
      "tags": [
        "Roman",
        "neuter"
      ],
      "word": "vreme poluraspada"
    },
    {
      "code": "sk",
      "lang": "Slovak",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "polčas premeny"
    },
    {
      "code": "sl",
      "lang": "Slovene",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "razpolovni čas"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "periodo de semidesintegración"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "semivida"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "time in physics",
      "tags": [
        "feminine"
      ],
      "word": "vida media"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "time in physics",
      "tags": [
        "common-gender"
      ],
      "word": "halveringstid"
    },
    {
      "code": "tl",
      "lang": "Tagalog",
      "sense": "time in physics",
      "word": "kalahatimbuhay"
    },
    {
      "code": "ta",
      "lang": "Tamil",
      "roman": "araivāḻvuk kālam",
      "sense": "time in physics",
      "word": "அரைவாழ்வுக் காலம்"
    },
    {
      "code": "te",
      "lang": "Telugu",
      "roman": "artha jīvitakālaṁ",
      "sense": "time in physics",
      "word": "అర్థ జీవితకాలం"
    },
    {
      "code": "th",
      "lang": "Thai",
      "sense": "time in physics",
      "word": "ครึ่งชีวิต"
    },
    {
      "code": "uk",
      "lang": "Ukrainian",
      "roman": "períod napivrózpadu",
      "sense": "time in physics",
      "tags": [
        "masculine"
      ],
      "word": "пері́од напівро́зпаду"
    },
    {
      "code": "uz",
      "lang": "Uzbek",
      "sense": "time in physics",
      "word": "yarim yemirilish davri"
    },
    {
      "code": "vi",
      "lang": "Vietnamese",
      "sense": "time in physics",
      "word": "chu kì bán rã"
    },
    {
      "code": "vi",
      "lang": "Vietnamese",
      "sense": "time in physics",
      "word": "chu kỳ bán rã"
    },
    {
      "code": "vi",
      "lang": "Vietnamese",
      "sense": "time in physics",
      "word": "chu kỳ nửa phân rã"
    },
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "feminine"
      ],
      "word": "semivida"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "puoliintumisaika"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "feminine"
      ],
      "word": "demi-vie"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "feminine"
      ],
      "word": "Halbwertszeit"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "felezési idő"
    },
    {
      "code": "id",
      "lang": "Indonesian",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "waktu paruh"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "feminine"
      ],
      "word": "emivita"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "feminine"
      ],
      "word": "semivita"
    },
    {
      "alt": "はんげんき",
      "code": "ja",
      "lang": "Japanese",
      "roman": "hangenki",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "半減期"
    },
    {
      "code": "ms",
      "lang": "Malay",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "separuh hayat"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "períod polužízni",
      "sense": "chemistry: time required for concentration to fall to half",
      "tags": [
        "masculine"
      ],
      "word": "пери́од полужи́зни"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "semivida"
    },
    {
      "code": "tl",
      "lang": "Tagalog",
      "sense": "chemistry: time required for concentration to fall to half",
      "word": "kalahatimbuhay"
    },
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "medicine: time for a substance to lose half of its activity",
      "tags": [
        "feminine"
      ],
      "word": "semivida"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "medicine: time for a substance to lose half of its activity",
      "word": "puoliintumisaika"
    },
    {
      "code": "id",
      "lang": "Indonesian",
      "sense": "medicine: time for a substance to lose half of its activity",
      "word": "waktu paruh"
    },
    {
      "alt": "はんげんき",
      "code": "ja",
      "lang": "Japanese",
      "roman": "hangenki",
      "sense": "medicine: time for a substance to lose half of its activity",
      "word": "半減期"
    },
    {
      "code": "ms",
      "lang": "Malay",
      "sense": "medicine: time for a substance to lose half of its activity",
      "word": "separuh hayat"
    },
    {
      "code": "nb",
      "lang": "Norwegian Bokmål",
      "sense": "medicine: time for a substance to lose half of its activity",
      "tags": [
        "feminine",
        "masculine"
      ],
      "word": "halveringstid"
    },
    {
      "code": "nn",
      "lang": "Norwegian Nynorsk",
      "sense": "medicine: time for a substance to lose half of its activity",
      "tags": [
        "feminine"
      ],
      "word": "halveringstid"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "períod poluvyvedénija",
      "sense": "medicine: time for a substance to lose half of its activity",
      "tags": [
        "masculine"
      ],
      "word": "пери́од полувыведе́ния"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "time to lose half of influential power of an idea or fashion",
      "word": "puoliintumisaika"
    }
  ],
  "wikipedia": [
    "half-life"
  ],
  "word": "half-life"
}

Download raw JSONL data for half-life meaning in English (15.5kB)

{
  "called_from": "translations/324",
  "msg": "possible sense number in translation item: Greek: περίοδος ημιζωής m (períodos imizoḯs) (1)",
  "path": [
    "half-life"
  ],
  "section": "English",
  "subsection": "noun",
  "title": "half-life",
  "trace": ""
}

{
  "called_from": "translations/324",
  "msg": "possible sense number in translation item: Icelandic: helmingunartími m (1)",
  "path": [
    "half-life"
  ],
  "section": "English",
  "subsection": "noun",
  "title": "half-life",
  "trace": ""
}

This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2024-11-06 from the enwiktionary dump dated 2024-10-02 using wiktextract (fbeafe8 and 7f03c9b). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.