"Planet X" meaning in English

See Planet X in All languages combined, or Wiktionary

Proper name

IPA: /ˈplænɪt ɛks/
Etymology: X represents an unknown as opposed to the Roman numeral for 10 (initially, Planet X would have been the ninth planet). Head templates: {{en-proper noun|head=Planet X}} Planet X
  1. (astronomy) A hypothetical planet in the Solar system, beyond the currently known outermost planet. (The term was applied to Eris for a short while, when Pluto was still considered the ninth planet.) Categories (topical): Astronomy, Fictional planets, Planets, Pluto Translations (hypothetical planet): X行星 (iks¹ hang⁴ sing¹, iks¹ haang⁴ sing¹) (Chinese Cantonese), X行星 (X xíngxīng) (Chinese Mandarin), planeet X [feminine] (Dutch), planeetta X (Finnish), planète X [feminine] (French), Transpluto [masculine] (German), Planet X [masculine] (German), pianeta X [masculine] (Italian), 惑星X (wakusei X) (Japanese), pjaneta X (Maltese), Planeta X [masculine] (Portuguese), Плане́та Х (Planéta X) [feminine] (Russian), Плане́та Икс (Planéta Iks) [feminine] (Russian), planet X [masculine] (Slovene), planeta X [masculine] (Spanish), planeten X [common-gender] (Swedish), hành tinh X (Vietnamese)
    Sense id: en-Planet_X-en-name-TYHaSUUk Disambiguation of Fictional planets: 51 32 18 Disambiguation of Planets: 56 28 15 Disambiguation of Pluto: 57 34 8 Categories (other): English entries with incorrect language header, Entries with translation boxes, Pages with 1 entry, Pages with entries, Terms with Cantonese translations, Terms with Dutch translations, Terms with Finnish translations, Terms with French translations, Terms with German translations, Terms with Italian translations, Terms with Japanese translations, Terms with Maltese translations, Terms with Mandarin translations, Terms with Portuguese translations, Terms with Russian translations, Terms with Slovene translations, Terms with Spanish translations, Terms with Swedish translations, Terms with Vietnamese translations, Obsolete scientific theories Disambiguation of English entries with incorrect language header: 54 29 17 Disambiguation of Entries with translation boxes: 55 28 16 Disambiguation of Pages with 1 entry: 59 25 16 Disambiguation of Pages with entries: 56 29 15 Disambiguation of Terms with Cantonese translations: 55 29 16 Disambiguation of Terms with Dutch translations: 55 30 15 Disambiguation of Terms with Finnish translations: 53 31 17 Disambiguation of Terms with French translations: 54 30 16 Disambiguation of Terms with German translations: 57 29 15 Disambiguation of Terms with Italian translations: 57 29 14 Disambiguation of Terms with Japanese translations: 57 29 14 Disambiguation of Terms with Maltese translations: 51 31 18 Disambiguation of Terms with Mandarin translations: 51 30 20 Disambiguation of Terms with Portuguese translations: 52 30 18 Disambiguation of Terms with Russian translations: 57 29 14 Disambiguation of Terms with Slovene translations: 51 31 18 Disambiguation of Terms with Spanish translations: 59 27 14 Disambiguation of Terms with Swedish translations: 51 31 18 Disambiguation of Terms with Vietnamese translations: 51 31 18 Disambiguation of Obsolete scientific theories: 40 33 27 Topics: astronomy, natural-sciences Disambiguation of 'hypothetical planet': 66 19 15
  2. (astronomy, obsolete) A theoretical planet responsible for reported gravitational perturbations of Neptune's orbit. (This was initially believed to be Pluto. The reported perturbations were an error.) Tags: obsolete Categories (topical): Astronomy
    Sense id: en-Planet_X-en-name-UPsnHT83 Categories (other): Obsolete scientific theories Disambiguation of Obsolete scientific theories: 40 33 27 Topics: astronomy, natural-sciences
  3. (astronomy, obsolete) A theoretical planet responsible for observed gravitational perturbations of Uranus' orbit. (This planet was discovered and is now known as Neptune.) Tags: obsolete Categories (topical): Astronomy
    Sense id: en-Planet_X-en-name-90Mv2huA Categories (other): Obsolete scientific theories Disambiguation of Obsolete scientific theories: 40 33 27 Topics: astronomy, natural-sciences
The following are not (yet) sense-disambiguated
Related terms: Nibiru, Tiamat
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      "_dis1": "38 31 31",
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      "_dis1": "38 31 31",
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          "_dis": "51 32 18",
          "kind": "topical",
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      "glosses": [
        "A hypothetical planet in the Solar system, beyond the currently known outermost planet. (The term was applied to Eris for a short while, when Pluto was still considered the ninth planet.)"
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      "id": "en-Planet_X-en-name-TYHaSUUk",
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        "(astronomy) A hypothetical planet in the Solar system, beyond the currently known outermost planet. (The term was applied to Eris for a short while, when Pluto was still considered the ninth planet.)"
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      "topics": [
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        {
          "_dis1": "66 19 15",
          "code": "yue",
          "lang": "Chinese Cantonese",
          "roman": "iks¹ hang⁴ sing¹, iks¹ haang⁴ sing¹",
          "sense": "hypothetical planet",
          "word": "X行星"
        },
        {
          "_dis1": "66 19 15",
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "X xíngxīng",
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          "word": "X行星"
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          "_dis1": "66 19 15",
          "code": "nl",
          "lang": "Dutch",
          "sense": "hypothetical planet",
          "tags": [
            "feminine"
          ],
          "word": "planeet X"
        },
        {
          "_dis1": "66 19 15",
          "code": "fi",
          "lang": "Finnish",
          "sense": "hypothetical planet",
          "word": "planeetta X"
        },
        {
          "_dis1": "66 19 15",
          "code": "fr",
          "lang": "French",
          "sense": "hypothetical planet",
          "tags": [
            "feminine"
          ],
          "word": "planète X"
        },
        {
          "_dis1": "66 19 15",
          "code": "de",
          "lang": "German",
          "sense": "hypothetical planet",
          "tags": [
            "masculine"
          ],
          "word": "Transpluto"
        },
        {
          "_dis1": "66 19 15",
          "code": "de",
          "lang": "German",
          "sense": "hypothetical planet",
          "tags": [
            "masculine"
          ],
          "word": "Planet X"
        },
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          "_dis1": "66 19 15",
          "code": "it",
          "lang": "Italian",
          "sense": "hypothetical planet",
          "tags": [
            "masculine"
          ],
          "word": "pianeta X"
        },
        {
          "_dis1": "66 19 15",
          "code": "ja",
          "lang": "Japanese",
          "roman": "wakusei X",
          "sense": "hypothetical planet",
          "word": "惑星X"
        },
        {
          "_dis1": "66 19 15",
          "code": "mt",
          "lang": "Maltese",
          "sense": "hypothetical planet",
          "word": "pjaneta X"
        },
        {
          "_dis1": "66 19 15",
          "code": "pt",
          "lang": "Portuguese",
          "sense": "hypothetical planet",
          "tags": [
            "masculine"
          ],
          "word": "Planeta X"
        },
        {
          "_dis1": "66 19 15",
          "code": "ru",
          "lang": "Russian",
          "roman": "Planéta X",
          "sense": "hypothetical planet",
          "tags": [
            "feminine"
          ],
          "word": "Плане́та Х"
        },
        {
          "_dis1": "66 19 15",
          "code": "ru",
          "lang": "Russian",
          "roman": "Planéta Iks",
          "sense": "hypothetical planet",
          "tags": [
            "feminine"
          ],
          "word": "Плане́та Икс"
        },
        {
          "_dis1": "66 19 15",
          "code": "sl",
          "lang": "Slovene",
          "sense": "hypothetical planet",
          "tags": [
            "masculine"
          ],
          "word": "planet X"
        },
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          "_dis1": "66 19 15",
          "code": "es",
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          "sense": "hypothetical planet",
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      "id": "en-Planet_X-en-name-UPsnHT83",
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      "id": "en-Planet_X-en-name-90Mv2huA",
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      ],
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  ],
  "sounds": [
    {
      "ipa": "/ˈplænɪt ɛks/"
    }
  ],
  "wikipedia": [
    "Planet X"
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  "word": "Planet X"
}
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  "translations": [
    {
      "code": "yue",
      "lang": "Chinese Cantonese",
      "roman": "iks¹ hang⁴ sing¹, iks¹ haang⁴ sing¹",
      "sense": "hypothetical planet",
      "word": "X行星"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "X xíngxīng",
      "sense": "hypothetical planet",
      "word": "X行星"
    },
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "hypothetical planet",
      "tags": [
        "feminine"
      ],
      "word": "planeet X"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "hypothetical planet",
      "word": "planeetta X"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "hypothetical planet",
      "tags": [
        "feminine"
      ],
      "word": "planète X"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "hypothetical planet",
      "tags": [
        "masculine"
      ],
      "word": "Transpluto"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "hypothetical planet",
      "tags": [
        "masculine"
      ],
      "word": "Planet X"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "hypothetical planet",
      "tags": [
        "masculine"
      ],
      "word": "pianeta X"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "wakusei X",
      "sense": "hypothetical planet",
      "word": "惑星X"
    },
    {
      "code": "mt",
      "lang": "Maltese",
      "sense": "hypothetical planet",
      "word": "pjaneta X"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "hypothetical planet",
      "tags": [
        "masculine"
      ],
      "word": "Planeta X"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "Planéta X",
      "sense": "hypothetical planet",
      "tags": [
        "feminine"
      ],
      "word": "Плане́та Х"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "Planéta Iks",
      "sense": "hypothetical planet",
      "tags": [
        "feminine"
      ],
      "word": "Плане́та Икс"
    },
    {
      "code": "sl",
      "lang": "Slovene",
      "sense": "hypothetical planet",
      "tags": [
        "masculine"
      ],
      "word": "planet X"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "hypothetical planet",
      "tags": [
        "masculine"
      ],
      "word": "planeta X"
    },
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "hypothetical planet",
      "tags": [
        "common-gender"
      ],
      "word": "planeten X"
    },
    {
      "code": "vi",
      "lang": "Vietnamese",
      "sense": "hypothetical planet",
      "word": "hành tinh X"
    }
  ],
  "wikipedia": [
    "Planet X"
  ],
  "word": "Planet X"
}

Download raw JSONL data for Planet X meaning in English (5.0kB)


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.