"sp. gr." meaning in All languages combined

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      "expansion": "sp. gr. (plural not attested)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "specific gravity"
        }
      ],
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      "glosses": [
        "Abbreviation of specific gravity."
      ],
      "id": "en-sp._gr.-en-noun-xV4bolT9",
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  "word": "sp. gr."
}

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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "word": "specific gravity"
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        "English countable nouns",
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