"gastrula" meaning in English

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  "etymology_text": "From German Gastrula, coined by Ernst Haeckel in his 1872 work \"Biology of Calcareous Sponges\".",
  "forms": [
    {
      "form": "gastrulas",
      "tags": [
        "plural"
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    },
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      "form": "gastrulae",
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  "lang_code": "en",
  "pos": "noun",
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      "derived": [
        {
          "word": "coelogastrula"
        },
        {
          "word": "gastrular"
        },
        {
          "word": "gastrulate"
        },
        {
          "word": "metagastrula"
        },
        {
          "word": "pregastrula"
        }
      ],
      "glosses": [
        "A stage in the development of embryos of most animals consisting of a three-layered sac of ectoderm, mesoderm and endoderm."
      ],
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        [
          "sac",
          "sac"
        ],
        [
          "ectoderm",
          "ectoderm"
        ],
        [
          "mesoderm",
          "mesoderm"
        ],
        [
          "endoderm",
          "endoderm"
        ]
      ],
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        "(embryology) A stage in the development of embryos of most animals consisting of a three-layered sac of ectoderm, mesoderm and endoderm."
      ],
      "related": [
        {
          "word": "gastrulation"
        }
      ],
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        "Ernst Haeckel",
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    }
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  "word": "gastrula"
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      "word": "coelogastrula"
    },
    {
      "word": "gastrular"
    },
    {
      "word": "gastrulate"
    },
    {
      "word": "metagastrula"
    },
    {
      "word": "pregastrula"
    }
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    {
      "form": "gastrulas",
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      "form": "gastrulae",
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  "lang_code": "en",
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        "(embryology) A stage in the development of embryos of most animals consisting of a three-layered sac of ectoderm, mesoderm and endoderm."
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  "word": "gastrula"
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