"LH2" meaning in English

{
  "descendants": [
    {
      "lang": "Japanese",
      "lang_code": "ja",
      "roman": "LH2",
      "word": "LH2"
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "?"
      },
      "expansion": "LH2",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "(a liquid composed of the liquid phase of molecular hydrogen (H₂))",
          "word": "liquid hydrogen"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English words spelled without vowels",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
          "name": "Terms with Japanese translations",
          "parents": [],
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        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Cryogenics",
          "orig": "en:Cryogenics",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Hydrogen",
          "orig": "en:Hydrogen",
          "parents": [],
          "source": "w"
        }
      ],
      "coordinate_terms": [
        {
          "word": "CH2"
        },
        {
          "word": "H2"
        },
        {
          "word": "LHe"
        },
        {
          "word": "LN2"
        },
        {
          "word": "LNG"
        },
        {
          "word": "LO2"
        },
        {
          "word": "LOX"
        },
        {
          "word": "LOx"
        },
        {
          "word": "lox"
        },
        {
          "word": "LPG"
        }
      ],
      "glosses": [
        "Abbreviation of liquid hydrogen (a liquid composed of the liquid phase of molecular hydrogen (H₂))."
      ],
      "id": "en-LH2-en-noun-nGKcb-hs",
      "links": [
        [
          "liquid",
          "liquid#English"
        ],
        [
          "hydrogen",
          "hydrogen#English"
        ],
        [
          "liquid phase",
          "liquid phase#English"
        ]
      ],
      "synonyms": [
        {
          "word": "H2(l)"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ],
      "translations": [
        {
          "code": "ja",
          "lang": "Japanese",
          "lang_code": "ja",
          "roman": "LH2",
          "sense": "abbreviation for liquid molecular hydrogen",
          "word": "LH2}"
        }
      ]
    }
  ],
  "word": "LH2"
}

{
  "coordinate_terms": [
    {
      "word": "CH2"
    },
    {
      "word": "H2"
    },
    {
      "word": "LHe"
    },
    {
      "word": "LN2"
    },
    {
      "word": "LNG"
    },
    {
      "word": "LO2"
    },
    {
      "word": "LOX"
    },
    {
      "word": "LOx"
    },
    {
      "word": "lox"
    },
    {
      "word": "LPG"
    }
  ],
  "descendants": [
    {
      "lang": "Japanese",
      "lang_code": "ja",
      "roman": "LH2",
      "word": "LH2"
    }
  ],
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      "args": {
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      "expansion": "LH2",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "extra": "(a liquid composed of the liquid phase of molecular hydrogen (H₂))",
          "word": "liquid hydrogen"
        }
      ],
      "categories": [
        "English abbreviations",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
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        "English terms spelled with numbers",
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        "Entries with translation boxes",
        "Pages with 2 entries",
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        "en:Cryogenics",
        "en:Hydrogen"
      ],
      "glosses": [
        "Abbreviation of liquid hydrogen (a liquid composed of the liquid phase of molecular hydrogen (H₂))."
      ],
      "links": [
        [
          "liquid",
          "liquid#English"
        ],
        [
          "hydrogen",
          "hydrogen#English"
        ],
        [
          "liquid phase",
          "liquid phase#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "H2(l)"
    }
  ],
  "translations": [
    {
      "code": "ja",
      "lang": "Japanese",
      "lang_code": "ja",
      "roman": "LH2",
      "sense": "abbreviation for liquid molecular hydrogen",
      "word": "LH2}"
    }
  ],
  "word": "LH2"
}

{
  "called_from": "translations/611",
  "msg": "suspicious translation with '}': {'lang': 'Japanese', 'code': 'ja', 'lang_code': 'ja', 'sense': 'abbreviation for liquid molecular hydrogen', 'roman': 'LH2', 'word': 'LH2}'}",
  "path": [
    "LH2"
  ],
  "section": "English",
  "subsection": "noun",
  "title": "LH2",
  "trace": ""
}