"D₂O" meaning in Translingual

{
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "D₂O",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "related": [
    {
      "_dis1": "0 0",
      "word": "H₂O"
    },
    {
      "_dis1": "0 0",
      "word": "light water"
    },
    {
      "_dis1": "0 0",
      "word": "DHO"
    },
    {
      "_dis1": "0 0",
      "word": "semi-heavy water"
    },
    {
      "_dis1": "0 0",
      "word": "protium"
    },
    {
      "_dis1": "0 0",
      "word": "hydrogen"
    },
    {
      "_dis1": "0 0",
      "word": "DHMO"
    },
    {
      "_dis1": "0 0",
      "word": "dihydrogen monoxide"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
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          "parents": [],
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          "_dis": "100 0",
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          "name": "Translingual entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "name": "Translingual terms with non-redundant non-automated sortkeys",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "langcode": "mul",
          "name": "Chemical formulae",
          "orig": "mul:Chemical formulae",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "100 0",
          "kind": "other",
          "langcode": "mul",
          "name": "Inorganic compounds",
          "orig": "mul:Inorganic compounds",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A molecule of heavy water, comprising two deuterium atoms and an oxygen atom."
      ],
      "id": "en-D₂O-mul-symbol-nR41WoLM",
      "links": [
        [
          "molecule",
          "molecule"
        ],
        [
          "heavy water",
          "heavy water"
        ],
        [
          "deuterium",
          "deuterium"
        ],
        [
          "oxygen",
          "oxygen"
        ],
        [
          "atom",
          "atom"
        ]
      ]
    },
    {
      "categories": [],
      "glosses": [
        "heavy water"
      ],
      "id": "en-D₂O-mul-symbol-85D12FSf",
      "links": [
        [
          "heavy water",
          "heavy water"
        ]
      ],
      "raw_glosses": [
        "(informal, uncountable) heavy water"
      ],
      "tags": [
        "informal",
        "uncountable"
      ]
    }
  ],
  "word": "D₂O"
}

{
  "categories": [
    "Pages with 1 entry",
    "Pages with entries",
    "Translingual entries with incorrect language header",
    "Translingual lemmas",
    "Translingual symbols",
    "Translingual terms spelled with ₂",
    "Translingual terms with non-redundant non-automated sortkeys",
    "mul:Chemical formulae",
    "mul:Inorganic compounds"
  ],
  "head_templates": [
    {
      "args": {
        "1": "mul",
        "2": "symbol"
      },
      "expansion": "D₂O",
      "name": "head"
    }
  ],
  "lang": "Translingual",
  "lang_code": "mul",
  "pos": "symbol",
  "related": [
    {
      "word": "H₂O"
    },
    {
      "word": "light water"
    },
    {
      "word": "DHO"
    },
    {
      "word": "semi-heavy water"
    },
    {
      "word": "protium"
    },
    {
      "word": "hydrogen"
    },
    {
      "word": "DHMO"
    },
    {
      "word": "dihydrogen monoxide"
    }
  ],
  "senses": [
    {
      "glosses": [
        "A molecule of heavy water, comprising two deuterium atoms and an oxygen atom."
      ],
      "links": [
        [
          "molecule",
          "molecule"
        ],
        [
          "heavy water",
          "heavy water"
        ],
        [
          "deuterium",
          "deuterium"
        ],
        [
          "oxygen",
          "oxygen"
        ],
        [
          "atom",
          "atom"
        ]
      ]
    },
    {
      "categories": [
        "Translingual informal terms",
        "Translingual uncountable nouns"
      ],
      "glosses": [
        "heavy water"
      ],
      "links": [
        [
          "heavy water",
          "heavy water"
        ]
      ],
      "raw_glosses": [
        "(informal, uncountable) heavy water"
      ],
      "tags": [
        "informal",
        "uncountable"
      ]
    }
  ],
  "word": "D₂O"
}