epiblast

[ep-uh-blast]

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 formsep·i·blas·tic, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for epiblast

Historical Examples of epiblast

Ectoblast: the outer wall of a cell; the ectoderm or epiblast.
Explanation of Terms Used in Entomology
John. B. Smith
The outer of these is the epiblast, the inner the mesoblast.
The Works of Francis Maitland Balfour, Volume 1
Francis Maitland Balfour
The division of the epiblast into a nervous and epidermic stratum.
The Works of Francis Maitland Balfour, Volume 1
Francis Maitland Balfour
The inner of the two is called the hypoblast, the outer the epiblast.
The Works of Francis Maitland Balfour, Volume 1
Francis Maitland Balfour
The mesoblast is attached in the median line to the epiblast.
The Works of Francis Maitland Balfour, Volume 1
Francis Maitland Balfour

British Dictionary definitions for epiblast

epiblast

noun

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

Derived Formsepiblastic, 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

epiblast in Medicine

epiblast

[ĕp′ə-blăst′]

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

Related formsep′i•blas′tic adj.