"capnometer" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "capno",
        "3": "meter"
      },
      "expansion": "capno- + -meter",
      "name": "confix"
    }
  ],
  "etymology_text": "capno- + -meter",
  "forms": [
    {
      "form": "capnometers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "capnometer (plural capnometers)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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          "name": "English terms prefixed with capno-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -meter",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "A medical instrument that measures carbon dioxide levels in the exhaled air of patients on ventilators or under anesthesia"
      ],
      "id": "en-capnometer-en-noun-zSoLBdgj",
      "links": [
        [
          "instrument",
          "instrument"
        ],
        [
          "carbon dioxide",
          "carbon dioxide"
        ]
      ],
      "related": [
        {
          "word": "capnometric"
        },
        {
          "word": "capnometry"
        }
      ]
    }
  ],
  "word": "capnometer"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "capno",
        "3": "meter"
      },
      "expansion": "capno- + -meter",
      "name": "confix"
    }
  ],
  "etymology_text": "capno- + -meter",
  "forms": [
    {
      "form": "capnometers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "capnometer (plural capnometers)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "capnometric"
    },
    {
      "word": "capnometry"
    }
  ],
  "senses": [
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        "English terms prefixed with capno-",
        "English terms suffixed with -meter"
      ],
      "glosses": [
        "A medical instrument that measures carbon dioxide levels in the exhaled air of patients on ventilators or under anesthesia"
      ],
      "links": [
        [
          "instrument",
          "instrument"
        ],
        [
          "carbon dioxide",
          "carbon dioxide"
        ]
      ]
    }
  ],
  "word": "capnometer"
}