"luminosity" meaning in English

{
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    {
      "kind": "other",
      "name": "Terms suffixed with -ity",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "luminous",
        "2": "ity"
      },
      "expansion": "luminous + -ity",
      "name": "ety-suffix"
    }
  ],
  "etymology_text": "luminous + -ity",
  "forms": [
    {
      "form": "luminosity",
      "raw_tags": [
        "Singular"
      ]
    },
    {
      "form": "–",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [],
      "examples": [
        {
          "text": "The luminosity of the sun is greater than the moon."
        }
      ],
      "glosses": [
        "Luminosity is how bright something is."
      ],
      "id": "simple-luminosity-en-noun-0Sd6YKMH",
      "raw_tags": [
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌluːmɪˈnɒsɪti/"
    },
    {
      "audio": "LL-Q1860 (eng)-Flame, not lame-luminosity.wav",
      "tags": [
        "US"
      ]
    }
  ],
  "tags": [
    "singular-only"
  ],
  "word": "luminosity"
}

{
  "categories": [
    "Terms suffixed with -ity"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "luminous",
        "2": "ity"
      },
      "expansion": "luminous + -ity",
      "name": "ety-suffix"
    }
  ],
  "etymology_text": "luminous + -ity",
  "forms": [
    {
      "form": "luminosity",
      "raw_tags": [
        "Singular"
      ]
    },
    {
      "form": "–",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "noun4"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Uncountable nouns"
      ],
      "examples": [
        {
          "text": "The luminosity of the sun is greater than the moon."
        }
      ],
      "glosses": [
        "Luminosity is how bright something is."
      ],
      "raw_tags": [
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌluːmɪˈnɒsɪti/"
    },
    {
      "audio": "LL-Q1860 (eng)-Flame, not lame-luminosity.wav",
      "tags": [
        "US"
      ]
    }
  ],
  "tags": [
    "singular-only"
  ],
  "word": "luminosity"
}