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| gas·tru·la [ gástrələ ] (plural gas·tru·las or gas·tru·lae [ gástrə l ]) |
noun |
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| Definition: |
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stage of embryo: the stage in embryonic development after the blastula during which the embryo develops two layers
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| [Late 19th century. < modern Latin, "little stomach" < Greek gastēr "stomach"] |
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 gas·tru·lar adjective |
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