"hydrogen-2" meaning in All languages combined

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      "expansion": "hydrogen-2 (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        {
          "kind": "other",
          "langcode": "en",
          "name": "Deuterium",
          "orig": "en:Deuterium",
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      "glosses": [
        "Synonym of deuterium."
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          "word": "deuterium"
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  "word": "hydrogen-2"
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  "lang_code": "en",
  "pos": "noun",
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        "Synonym of deuterium."
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  "word": "hydrogen-2"
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