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gastrostomy | gastrotomy | gastrotricha | gastrotrocha | gastrovascular | gastrula | gastrulation | gastrura | gastrurous | gasworks | gat

gastrula

 : 
Noun
 : 
gas=tru=la

CIDE DICTIONARY

gastrulan. [NL., dim. fr. Gr. the stomach.].
     An embryonic form having its origin in the invagination or pushing in of the wall of the planula or blastula (the blastosphere) on one side, thus giving rise to a double-walled sac, with one opening or mouth (the blastopore) which leads into the cavity (the archenteron) lined by the inner wall (the hypoblast). See Illust. under Invagination. In a more general sense, an ideal stage in embryonic development. See Gastræa.  [1913 Webster]

OXFORD DICTIONARY

gastrula, n. (pl. gastrulae) Zool. an embryonic stage developing from the blastula.

Etymology
mod.L f. Gk gaster gast(e)ros belly

For further exploring for "gastrula" in Webster Dictionary Online


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