epiblast

[ 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.

Nearby words

epi-, epiandrosterone, epibenthos, epibiosis, epibiotic, epiblast, epiblem, epiblepharon, epibolic, epiboly, epibulbar

Origin of epiblast

First recorded in 1865–70; epi- + -blast

Related forms

ep·i·blas·tic, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for epiblast

Fol gives an equally precise account, but states that the first rudiment of the organ arises as a solid mass of epiblast cells.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour
The two pairs of limbs have appeared as elongated ridges of epiblast.
The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour
The external layer or epiblast is an uniform sheet forming the main part of the ventral plate (fig. 178 B, ep).
The Works of Francis Maitland Balfour, Volume II (of 4)|Francis Maitland Balfour
These plates are in very close contact with the hypoblast, and also follow with fair accuracy the outline of the epiblast.
The Works of Francis Maitland Balfour, Volume 1|Francis Maitland Balfour

The parts of the organs of special sense, which arise from the epiblast, are developed from the nervous layer.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour

British Dictionary definitions for epiblast

epiblast

/ (ˈɛpɪˌblæst) /

noun

embryol the outermost layer of an embryo, which becomes the ectoderm at gastrulationAlso 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

Medicine definitions for epiblast

epiblast

[ ĕp′ə-blăst′ ]

n.

The outer layer of a blastula that gives rise to the ectoderm after gastrulation.

Related forms

ep′i•blas′tic adj.