"microphotometer" meaning in English

{
  "etymology_templates": [
    {
      "args": {
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        "2": "micro",
        "3": "photometer"
      },
      "expansion": "micro- + photometer",
      "name": "prefix"
    }
  ],
  "etymology_text": "micro- + photometer",
  "forms": [
    {
      "form": "microphotometers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "microphotometer (plural microphotometers)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
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          "source": "w"
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        {
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          "name": "English terms prefixed with micro-",
          "parents": [],
          "source": "w"
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        }
      ],
      "glosses": [
        "Any of various photometers used either to measure the variation of densities over small areas, or to measure accurately small changes in illumination."
      ],
      "id": "en-microphotometer-en-noun-CyKXsGoy",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "photometer",
          "photometer"
        ]
      ],
      "raw_glosses": [
        "(physics) Any of various photometers used either to measure the variation of densities over small areas, or to measure accurately small changes in illumination."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ],
      "translations": [
        {
          "code": "it",
          "lang": "Italian",
          "sense": "type of photometer",
          "tags": [
            "masculine"
          ],
          "word": "microfotometro"
        }
      ]
    }
  ],
  "word": "microphotometer"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "micro",
        "3": "photometer"
      },
      "expansion": "micro- + photometer",
      "name": "prefix"
    }
  ],
  "etymology_text": "micro- + photometer",
  "forms": [
    {
      "form": "microphotometers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "microphotometer (plural microphotometers)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
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        "English terms prefixed with micro-",
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      "glosses": [
        "Any of various photometers used either to measure the variation of densities over small areas, or to measure accurately small changes in illumination."
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "photometer",
          "photometer"
        ]
      ],
      "raw_glosses": [
        "(physics) Any of various photometers used either to measure the variation of densities over small areas, or to measure accurately small changes in illumination."
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "translations": [
    {
      "code": "it",
      "lang": "Italian",
      "sense": "type of photometer",
      "tags": [
        "masculine"
      ],
      "word": "microfotometro"
    }
  ],
  "word": "microphotometer"
}