"CO₂" meaning in Translingual

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      "expansion": "CO₂",
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  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
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          "kind": "other",
          "name": "Pages with 4 entries",
          "parents": [],
          "source": "w"
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          "parents": [],
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            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Chemical formulae",
          "orig": "mul:Chemical formulae",
          "parents": [
            "Chemical notation",
            "Chemistry",
            "Names",
            "Symbols",
            "Sciences",
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            "Proper nouns",
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      ],
      "glosses": [
        "Carbon dioxide."
      ],
      "id": "en-CO₂-mul-symbol-wMuCY76C",
      "links": [
        [
          "Carbon dioxide",
          "carbon dioxide"
        ]
      ],
      "synonyms": [
        {
          "english": "nonstandard; acceptable when subscripts are not available or cannot be displayed",
          "word": "CO2"
        }
      ]
    }
  ],
  "word": "CO₂"
}

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      "expansion": "CO₂",
      "name": "head"
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  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "senses": [
    {
      "categories": [
        "Pages with 4 entries",
        "Pages with entries",
        "Translingual entries with incorrect language header",
        "Translingual lemmas",
        "Translingual symbols",
        "Translingual terms spelled with ₂",
        "mul:Chemical formulae"
      ],
      "glosses": [
        "Carbon dioxide."
      ],
      "links": [
        [
          "Carbon dioxide",
          "carbon dioxide"
        ]
      ]
    }
  ],
  "synonyms": [
    {
      "english": "nonstandard; acceptable when subscripts are not available or cannot be displayed",
      "word": "CO2"
    }
  ],
  "word": "CO₂"
}