"petrogr." meaning in English

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      "expansion": "petrogr. (uncountable)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "petrography"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
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      "examples": [
        {
          "ref": "1997: Oxford English Dictionary, lithotype, n. (additions series 1997)",
          "text": "Add: 4. Petrogr. A macroscopically visible constituent of coal distinguished by its physical characterisitics; a macroscopically distinguishable variety of coal. Cf. maceral n."
        }
      ],
      "glosses": [
        "Abbreviation of petrography."
      ],
      "id": "en-petrogr.-en-noun-TSjYv~Ip",
      "links": [
        [
          "petrography",
          "petrography#English"
        ]
      ],
      "synonyms": [
        {
          "word": "petrog"
        }
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "uncountable"
      ]
    }
  ],
  "word": "petrogr."
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "petrogr. (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "petrography"
        }
      ],
      "categories": [
        "English abbreviations",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms spelled with .",
        "English uncountable nouns"
      ],
      "examples": [
        {
          "ref": "1997: Oxford English Dictionary, lithotype, n. (additions series 1997)",
          "text": "Add: 4. Petrogr. A macroscopically visible constituent of coal distinguished by its physical characterisitics; a macroscopically distinguishable variety of coal. Cf. maceral n."
        }
      ],
      "glosses": [
        "Abbreviation of petrography."
      ],
      "links": [
        [
          "petrography",
          "petrography#English"
        ]
      ],
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        "abbreviation",
        "alt-of",
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  ],
  "synonyms": [
    {
      "word": "petrog"
    }
  ],
  "word": "petrogr."
}