gastrulas

Variant of gastrula

gastrula definition

gas·trula (gas′tro̵̅o̅ lə)

noun pl. gastrulae -·lae′ (-lē′, -lī) or gastrulas -·las

an embryo in an early stage of development, consisting of a sac with two layers, the ectoderm and endoderm, enclosing a central cavity, the archenteron, that opens to the outside through the blastopore

Etymology: ModL, dim. < Gr gastēr, the stomach

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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