"petrescent" meaning in English

{
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        "2": "la",
        "3": "petra",
        "4": "",
        "5": "rock, stone"
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      "expansion": "Latin petra (“rock, stone”)",
      "name": "uder"
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      "expansion": "Ancient Greek",
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  "etymology_text": "Latin petra (“rock, stone”), from Ancient Greek.",
  "head_templates": [
    {
      "args": {
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      "expansion": "petrescent (not comparable)",
      "name": "en-adj"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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      "examples": [
        {
          "ref": "1672, Robert Boyle, Origin and Virtues of Gems:",
          "text": "in the solid substance of the stone; […]this compact and ponderous body was made stony, by the supervention of some petrescent liquor upon porous earth",
          "type": "quote"
        }
      ],
      "glosses": [
        "Petrifying; converting into stone."
      ],
      "id": "en-petrescent-en-adj-T-4qy8A-",
      "links": [
        [
          "Petrifying",
          "petrify"
        ],
        [
          "stone",
          "stone"
        ]
      ],
      "raw_glosses": [
        "(archaic) Petrifying; converting into stone."
      ],
      "tags": [
        "archaic",
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/pɛˈtɹɛsənt/"
    },
    {
      "rhymes": "-ɛsənt"
    }
  ],
  "word": "petrescent"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "petra",
        "4": "",
        "5": "rock, stone"
      },
      "expansion": "Latin petra (“rock, stone”)",
      "name": "uder"
    },
    {
      "args": {
        "1": "en",
        "2": "grc",
        "3": "-"
      },
      "expansion": "Ancient Greek",
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  ],
  "etymology_text": "Latin petra (“rock, stone”), from Ancient Greek.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "petrescent (not comparable)",
      "name": "en-adj"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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        "English 3-syllable words",
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      "examples": [
        {
          "ref": "1672, Robert Boyle, Origin and Virtues of Gems:",
          "text": "in the solid substance of the stone; […]this compact and ponderous body was made stony, by the supervention of some petrescent liquor upon porous earth",
          "type": "quote"
        }
      ],
      "glosses": [
        "Petrifying; converting into stone."
      ],
      "links": [
        [
          "Petrifying",
          "petrify"
        ],
        [
          "stone",
          "stone"
        ]
      ],
      "raw_glosses": [
        "(archaic) Petrifying; converting into stone."
      ],
      "tags": [
        "archaic",
        "not-comparable"
      ]
    }
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  "sounds": [
    {
      "ipa": "/pɛˈtɹɛsənt/"
    },
    {
      "rhymes": "-ɛsənt"
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  ],
  "word": "petrescent"
}