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[ep-uh-blast] /ˈɛp əˌblæst/
noun, Embryology.
the primordial outer layer of a young embryo before the segregation of the germ layers, capable of becoming the ectoderm and containing cells capable of becoming the mesoderm and endoderm.
Origin of epiblast
First recorded in 1865-70; epi- + -blast
Related forms
epiblastic, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for epiblast


(embryol) the outermost layer of an embryo, which becomes the ectoderm at gastrulation Also called ectoblast
Derived Forms
epiblastic, adjective
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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epiblast in Medicine

epiblast ep·i·blast (ěp'ə-blāst')
The outer layer of a blastula that gives rise to the ectoderm after gastrulation.

ep'i·blast'ic adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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