"luminance" meaning in English

See luminance in All languages combined, or Wiktionary

Noun

Forms: luminances [plural]
Head templates: {{en-noun|~}} luminance (countable and uncountable, plural luminances)
  1. The quality of being luminous. Tags: countable, uncountable Categories (topical): Light
    Sense id: en-luminance-en-noun-hSz6acYV Disambiguation of Light: 43 32 25 Categories (other): Terms with Portuguese translations Disambiguation of Terms with Portuguese translations: 11 40 49
  2. The amount of light that passes through, is emitted, or is reflected from a particular area, and falls within a given solid angle. Tags: countable, uncountable
    Sense id: en-luminance-en-noun-shuvYuVQ Categories (other): English entries with incorrect language header, Pages with 2 entries, Pages with entries, Terms with Portuguese translations Disambiguation of English entries with incorrect language header: 9 44 47 Disambiguation of Pages with 2 entries: 7 46 47 Disambiguation of Pages with entries: 4 47 48 Disambiguation of Terms with Portuguese translations: 11 40 49
  3. (optics) The luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction (i.e. luminous intensity divided by unit area), measured in stilbs or apostilbs. Wikidata QID: Q355386 Tags: countable, uncountable Categories (topical): Optics, Physical quantities Translations (luminous intensity per unit area): осветеност (osvetenost) [feminine] (Bulgarian), luminanssi (Finnish), valotiheys (Finnish), Leuchtdichte [feminine] (German), fénysűrűség (Hungarian), luminância [feminine] (Portuguese)
    Sense id: en-luminance-en-noun-en:Q355386 Disambiguation of Physical quantities: 12 30 58 Categories (other): English entries with incorrect language header, Entries with translation boxes, Pages with 2 entries, Pages with entries, Terms with Bulgarian translations, Terms with Finnish translations, Terms with German translations, Terms with Hungarian translations, Terms with Portuguese translations Disambiguation of English entries with incorrect language header: 9 44 47 Disambiguation of Entries with translation boxes: 5 42 53 Disambiguation of Pages with 2 entries: 7 46 47 Disambiguation of Pages with entries: 4 47 48 Disambiguation of Terms with Bulgarian translations: 11 38 51 Disambiguation of Terms with Finnish translations: 10 40 50 Disambiguation of Terms with German translations: 10 39 50 Disambiguation of Terms with Hungarian translations: 18 34 49 Disambiguation of Terms with Portuguese translations: 11 40 49 Topics: engineering, natural-sciences, optics, physical-sciences, physics Disambiguation of 'luminous intensity per unit area': 17 23 59
The following are not (yet) sense-disambiguated
Synonyms: photometric brightness Related terms: brightness

Inflected forms

{
  "forms": [
    {
      "form": "luminances",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "luminance (countable and uncountable, plural luminances)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 0 0",
      "word": "brightness"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "_dis": "11 40 49",
          "kind": "other",
          "name": "Terms with Portuguese translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "43 32 25",
          "kind": "topical",
          "langcode": "en",
          "name": "Light",
          "orig": "en:Light",
          "parents": [
            "Energy",
            "Nature",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The quality of being luminous."
      ],
      "id": "en-luminance-en-noun-hSz6acYV",
      "links": [
        [
          "luminous",
          "luminous"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    },
    {
      "categories": [
        {
          "_dis": "9 44 47",
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          "name": "English entries with incorrect language header",
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            "Entries with incorrect language header",
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          "source": "w+disamb"
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          "_dis": "4 47 48",
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          "_dis": "11 40 49",
          "kind": "other",
          "name": "Terms with Portuguese translations",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The amount of light that passes through, is emitted, or is reflected from a particular area, and falls within a given solid angle."
      ],
      "id": "en-luminance-en-noun-shuvYuVQ",
      "tags": [
        "countable",
        "uncountable"
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Optics",
          "orig": "en:Optics",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        },
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          "_dis": "9 44 47",
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            "Entry maintenance"
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        },
        {
          "_dis": "5 42 53",
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "7 46 47",
          "kind": "other",
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        },
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          "_dis": "4 47 48",
          "kind": "other",
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        {
          "_dis": "11 38 51",
          "kind": "other",
          "name": "Terms with Bulgarian translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "10 40 50",
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "10 39 50",
          "kind": "other",
          "name": "Terms with German translations",
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          "source": "w+disamb"
        },
        {
          "_dis": "18 34 49",
          "kind": "other",
          "name": "Terms with Hungarian translations",
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          "source": "w+disamb"
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          "_dis": "11 40 49",
          "kind": "other",
          "name": "Terms with Portuguese translations",
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        },
        {
          "_dis": "12 30 58",
          "kind": "topical",
          "langcode": "en",
          "name": "Physical quantities",
          "orig": "en:Physical quantities",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "The luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction (i.e. luminous intensity divided by unit area), measured in stilbs or apostilbs."
      ],
      "id": "en-luminance-en-noun-en:Q355386",
      "links": [
        [
          "optics",
          "optics"
        ],
        [
          "luminous flux",
          "luminous flux"
        ],
        [
          "solid angle",
          "solid angle"
        ],
        [
          "luminous intensity",
          "luminous intensity"
        ],
        [
          "stilb",
          "stilb"
        ],
        [
          "apostilb",
          "apostilb"
        ]
      ],
      "raw_glosses": [
        "(optics) The luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction (i.e. luminous intensity divided by unit area), measured in stilbs or apostilbs."
      ],
      "senseid": [
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      "topics": [
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      "translations": [
        {
          "_dis1": "17 23 59",
          "code": "bg",
          "lang": "Bulgarian",
          "roman": "osvetenost",
          "sense": "luminous intensity per unit area",
          "tags": [
            "feminine"
          ],
          "word": "осветеност"
        },
        {
          "_dis1": "17 23 59",
          "code": "fi",
          "lang": "Finnish",
          "sense": "luminous intensity per unit area",
          "word": "luminanssi"
        },
        {
          "_dis1": "17 23 59",
          "code": "fi",
          "lang": "Finnish",
          "sense": "luminous intensity per unit area",
          "word": "valotiheys"
        },
        {
          "_dis1": "17 23 59",
          "code": "de",
          "lang": "German",
          "sense": "luminous intensity per unit area",
          "tags": [
            "feminine"
          ],
          "word": "Leuchtdichte"
        },
        {
          "_dis1": "17 23 59",
          "code": "hu",
          "lang": "Hungarian",
          "sense": "luminous intensity per unit area",
          "word": "fénysűrűség"
        },
        {
          "_dis1": "17 23 59",
          "code": "pt",
          "lang": "Portuguese",
          "sense": "luminous intensity per unit area",
          "tags": [
            "feminine"
          ],
          "word": "luminância"
        }
      ],
      "wikidata": [
        "Q355386"
      ]
    }
  ],
  "synonyms": [
    {
      "_dis1": "0 0 0",
      "word": "photometric brightness"
    }
  ],
  "wikipedia": [
    "luminance"
  ],
  "word": "luminance"
}
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    "Terms with Finnish translations",
    "Terms with German translations",
    "Terms with Hungarian translations",
    "Terms with Portuguese translations",
    "en:Light",
    "en:Physical quantities"
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  "forms": [
    {
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  ],
  "head_templates": [
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      "args": {
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  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "brightness"
    }
  ],
  "senses": [
    {
      "glosses": [
        "The quality of being luminous."
      ],
      "links": [
        [
          "luminous",
          "luminous"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
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    },
    {
      "glosses": [
        "The amount of light that passes through, is emitted, or is reflected from a particular area, and falls within a given solid angle."
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    },
    {
      "categories": [
        "en:Optics"
      ],
      "glosses": [
        "The luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction (i.e. luminous intensity divided by unit area), measured in stilbs or apostilbs."
      ],
      "links": [
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        ],
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          "luminous flux",
          "luminous flux"
        ],
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          "solid angle",
          "solid angle"
        ],
        [
          "luminous intensity",
          "luminous intensity"
        ],
        [
          "stilb",
          "stilb"
        ],
        [
          "apostilb",
          "apostilb"
        ]
      ],
      "raw_glosses": [
        "(optics) The luminous flux emitted in a given direction divided by the product of the projected area of the source element perpendicular to the direction and the solid angle containing that direction (i.e. luminous intensity divided by unit area), measured in stilbs or apostilbs."
      ],
      "senseid": [
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  "synonyms": [
    {
      "word": "photometric brightness"
    }
  ],
  "translations": [
    {
      "code": "bg",
      "lang": "Bulgarian",
      "roman": "osvetenost",
      "sense": "luminous intensity per unit area",
      "tags": [
        "feminine"
      ],
      "word": "осветеност"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "luminous intensity per unit area",
      "word": "luminanssi"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "luminous intensity per unit area",
      "word": "valotiheys"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "luminous intensity per unit area",
      "tags": [
        "feminine"
      ],
      "word": "Leuchtdichte"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "sense": "luminous intensity per unit area",
      "word": "fénysűrűség"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "luminous intensity per unit area",
      "tags": [
        "feminine"
      ],
      "word": "luminância"
    }
  ],
  "wikipedia": [
    "luminance"
  ],
  "word": "luminance"
}

Download raw JSONL data for luminance meaning in English (2.8kB)


This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2025-03-21 from the enwiktionary dump dated 2025-03-02 using wiktextract (db0bec0 and 633533e). 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.