"phenocryst" meaning in English

{
  "forms": [
    {
      "form": "phenocrysts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "phenocryst (plural phenocrysts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mineralogy",
          "orig": "en:Mineralogy",
          "parents": [
            "Geology",
            "Earth sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "phenocrystic"
        }
      ],
      "examples": [
        {
          "ref": "1965, Gordon A Macdonald and Takashi Katsura, Eruption of Lassen Peak, Cascade Range, California, in 1915: Example of Mixed Magmas, Geological Society of America Bulletin 76 (5), pages 475",
          "text": "Some of the feldspar phenocrysts are more than 1 cm long, but most are less than 5 mm."
        }
      ],
      "glosses": [
        "Any relatively large crystal embedded in a more fine-grained or glassy igneous rock"
      ],
      "id": "en-phenocryst-en-noun-5p0C9WYK",
      "links": [
        [
          "mineralogy",
          "mineralogy"
        ],
        [
          "crystal",
          "crystal"
        ],
        [
          "igneous",
          "igneous"
        ],
        [
          "rock",
          "rock"
        ]
      ],
      "raw_glosses": [
        "(mineralogy) Any relatively large crystal embedded in a more fine-grained or glassy igneous rock"
      ],
      "synonyms": [
        {
          "word": "phenocrystal"
        }
      ],
      "topics": [
        "chemistry",
        "geography",
        "geology",
        "mineralogy",
        "natural-sciences",
        "physical-sciences"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Any relatively large crystal embedded in a more fine-grained or glassy igneous rock",
          "word": "hajarae"
        }
      ],
      "wikipedia": [
        "phenocryst"
      ]
    }
  ],
  "word": "phenocryst"
}

{
  "derived": [
    {
      "word": "phenocrystic"
    }
  ],
  "forms": [
    {
      "form": "phenocrysts",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "phenocryst (plural phenocrysts)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "en:Mineralogy"
      ],
      "examples": [
        {
          "ref": "1965, Gordon A Macdonald and Takashi Katsura, Eruption of Lassen Peak, Cascade Range, California, in 1915: Example of Mixed Magmas, Geological Society of America Bulletin 76 (5), pages 475",
          "text": "Some of the feldspar phenocrysts are more than 1 cm long, but most are less than 5 mm."
        }
      ],
      "glosses": [
        "Any relatively large crystal embedded in a more fine-grained or glassy igneous rock"
      ],
      "links": [
        [
          "mineralogy",
          "mineralogy"
        ],
        [
          "crystal",
          "crystal"
        ],
        [
          "igneous",
          "igneous"
        ],
        [
          "rock",
          "rock"
        ]
      ],
      "raw_glosses": [
        "(mineralogy) Any relatively large crystal embedded in a more fine-grained or glassy igneous rock"
      ],
      "topics": [
        "chemistry",
        "geography",
        "geology",
        "mineralogy",
        "natural-sciences",
        "physical-sciences"
      ],
      "wikipedia": [
        "phenocryst"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "phenocrystal"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Any relatively large crystal embedded in a more fine-grained or glassy igneous rock",
      "word": "hajarae"
    }
  ],
  "word": "phenocryst"
}