"luminosity" meaning in Английский

{
  "categories": [
    {
      "kind": "other",
      "name": "Английские существительные",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Английский язык",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Нет сведений о составе слова",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Нужна этимология",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Свет/en",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Слова из 10 букв/en",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_text": "От ??",
  "lang": "Английский",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "яркость"
      ],
      "id": "ru-luminosity-en-noun-DII9M7NI",
      "raw_glosses": [
        "физ. яркость"
      ],
      "topics": [
        "physics"
      ]
    },
    {
      "glosses": [
        "светимость, звёздная величина"
      ],
      "id": "ru-luminosity-en-noun-gRqNvTg~",
      "raw_glosses": [
        "астрон. светимость, звёздная величина"
      ],
      "topics": [
        "astronomy"
      ]
    },
    {
      "glosses": [
        "светосила"
      ],
      "id": "ru-luminosity-en-noun-PWOoLWuM",
      "raw_glosses": [
        "опт. светосила"
      ],
      "topics": [
        "engineering",
        "physics"
      ]
    }
  ],
  "word": "luminosity"
}

{
  "categories": [
    "Английские существительные",
    "Английский язык",
    "Нет сведений о составе слова",
    "Нужна этимология",
    "Свет/en",
    "Слова из 10 букв/en"
  ],
  "etymology_text": "От ??",
  "lang": "Английский",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "яркость"
      ],
      "raw_glosses": [
        "физ. яркость"
      ],
      "topics": [
        "physics"
      ]
    },
    {
      "glosses": [
        "светимость, звёздная величина"
      ],
      "raw_glosses": [
        "астрон. светимость, звёздная величина"
      ],
      "topics": [
        "astronomy"
      ]
    },
    {
      "glosses": [
        "светосила"
      ],
      "raw_glosses": [
        "опт. светосила"
      ],
      "topics": [
        "engineering",
        "physics"
      ]
    }
  ],
  "word": "luminosity"
}