"metagastrula" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "meta",
        "3": "gastrula"
      },
      "expansion": "meta- + gastrula",
      "name": "prefix"
    }
  ],
  "etymology_text": "From meta- + gastrula.",
  "head_templates": [
    {
      "args": {
        "1": "!"
      },
      "expansion": "metagastrula (plural not attested)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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          "source": "w"
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          "source": "w"
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          "name": "English terms prefixed with meta-",
          "parents": [],
          "source": "w"
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        {
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Anatomy",
          "orig": "en:Anatomy",
          "parents": [
            "Biology",
            "Medicine",
            "Sciences",
            "Healthcare",
            "All topics",
            "Health",
            "Fundamental",
            "Body"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A gastrula with a cleavage differing from that of the standard type."
      ],
      "id": "en-metagastrula-en-noun-fdKECww~",
      "links": [
        [
          "anatomy",
          "anatomy"
        ],
        [
          "cleavage",
          "cleavage"
        ]
      ],
      "raw_glosses": [
        "(anatomy, archaic) A gastrula with a cleavage differing from that of the standard type."
      ],
      "tags": [
        "archaic",
        "no-plural"
      ],
      "topics": [
        "anatomy",
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "metagastrula"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "meta",
        "3": "gastrula"
      },
      "expansion": "meta- + gastrula",
      "name": "prefix"
    }
  ],
  "etymology_text": "From meta- + gastrula.",
  "head_templates": [
    {
      "args": {
        "1": "!"
      },
      "expansion": "metagastrula (plural not attested)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
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        "English nouns with unattested plurals",
        "English terms prefixed with meta-",
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        "Pages with entries",
        "en:Anatomy"
      ],
      "glosses": [
        "A gastrula with a cleavage differing from that of the standard type."
      ],
      "links": [
        [
          "anatomy",
          "anatomy"
        ],
        [
          "cleavage",
          "cleavage"
        ]
      ],
      "raw_glosses": [
        "(anatomy, archaic) A gastrula with a cleavage differing from that of the standard type."
      ],
      "tags": [
        "archaic",
        "no-plural"
      ],
      "topics": [
        "anatomy",
        "medicine",
        "sciences"
      ]
    }
  ],
  "word": "metagastrula"
}