"CO₃" meaning in Translingual

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  "etymology_text": "C + O + 3",
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      "expansion": "CO₃",
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      "args": {},
      "expansion": "CO₃",
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        {
          "kind": "topical",
          "langcode": "mul",
          "name": "Chemical formulae",
          "orig": "mul:Chemical formulae",
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      "glosses": [
        "The molecular formula for carbon trioxide."
      ],
      "id": "en-CO₃-mul-symbol-FyYmHwdv",
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        [
          "chemistry",
          "chemistry"
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        [
          "carbon trioxide",
          "carbon trioxide#English"
        ]
      ],
      "raw_glosses": [
        "(chemistry) The molecular formula for carbon trioxide."
      ],
      "related": [
        {
          "word": "3"
        },
        {
          "word": "C"
        },
        {
          "word": "CO"
        },
        {
          "word": "CO₂"
        },
        {
          "word": "O"
        },
        {
          "word": "₃"
        }
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "CO₃"
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  ],
  "etymology_text": "C + O + 3",
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      "expansion": "CO₃",
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      "word": "3"
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      "word": "C"
    },
    {
      "word": "CO"
    },
    {
      "word": "CO₂"
    },
    {
      "word": "O"
    },
    {
      "word": "₃"
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  "word": "CO₃"
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