"Hg" meaning in Translingual

{
  "etymology_templates": [
    {
      "args": {
        "1": "mul",
        "2": "NL.",
        "3": "hydrargyrum",
        "4": "hydrargyrum",
        "5": "mercury"
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      "expansion": "New Latin hydrargyrum (“mercury”)",
      "name": "der"
    },
    {
      "args": {
        "1": "mul",
        "2": "grc",
        "3": "ὑδράργυρος",
        "4": "",
        "5": "quicksilver"
      },
      "expansion": "Ancient Greek ὑδράργυρος (hudrárguros, “quicksilver”)",
      "name": "der"
    }
  ],
  "etymology_text": "From the New Latin hydrargyrum (“mercury”), form of hydrargyrus, from Ancient Greek ὑδράργυρος (hudrárguros, “quicksilver”), from ὕδωρ (húdōr, “water”) (whence hydro-) + ἄργῠρος (árguros, “silver”) (cognate to Ag (“symbol for silver”)). Compare quicksilver.",
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      "expansion": "Hg",
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  "lang_code": "mul",
  "pos": "symbol",
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          "name": "Ancient Greek links with redundant target parameters",
          "parents": [
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          "kind": "other",
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          "kind": "topical",
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            "Chemical elements",
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
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            "Fundamental"
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        },
        {
          "kind": "other",
          "name": "Translingual entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
        }
      ],
      "glosses": [
        "mercury."
      ],
      "id": "en-Hg-mul-symbol-pCGA4flH",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "mercury",
          "mercury"
        ]
      ],
      "raw_glosses": [
        "(chemistry) mercury."
      ],
      "related": [
        {
          "word": "mmHg"
        }
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "Hg"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "mul",
        "2": "NL.",
        "3": "hydrargyrum",
        "4": "hydrargyrum",
        "5": "mercury"
      },
      "expansion": "New Latin hydrargyrum (“mercury”)",
      "name": "der"
    },
    {
      "args": {
        "1": "mul",
        "2": "grc",
        "3": "ὑδράργυρος",
        "4": "",
        "5": "quicksilver"
      },
      "expansion": "Ancient Greek ὑδράργυρος (hudrárguros, “quicksilver”)",
      "name": "der"
    }
  ],
  "etymology_text": "From the New Latin hydrargyrum (“mercury”), form of hydrargyrus, from Ancient Greek ὑδράργυρος (hudrárguros, “quicksilver”), from ὕδωρ (húdōr, “water”) (whence hydro-) + ἄργῠρος (árguros, “silver”) (cognate to Ag (“symbol for silver”)). Compare quicksilver.",
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  "lang_code": "mul",
  "pos": "symbol",
  "related": [
    {
      "word": "mmHg"
    }
  ],
  "senses": [
    {
      "categories": [
        "Ancient Greek links with redundant target parameters",
        "Latin links with redundant target parameters",
        "Pages with 1 entry",
        "Symbols for chemical elements",
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        "Translingual terms derived from Ancient Greek",
        "Translingual terms derived from New Latin"
      ],
      "glosses": [
        "mercury."
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "mercury",
          "mercury"
        ]
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      "raw_glosses": [
        "(chemistry) mercury."
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
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  "word": "Hg"
}