n., pl., -las, or -lae (-lē').
An embryo at the stage following the blastula, consisting of a hollow, two-layered sac of ectoderm and endoderm surrounding an archenteron that communicates with the exterior through the blastopore.
[New Latin : Greek gastēr, gastr-, belly + Latin -ula, feminine diminutive suff..]
gastrular gas'tru·lar (-lər) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.
