embryonic disk


noun Embryology.

Also called embryonic shield. in the early embryo of mammals, the flattened inner cell mass that arises at the end of the blastocyst stage and from which the embryo begins to differentiate.
the blastodisk of yolky eggs.

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decorum

Origin of embryonic disk

First recorded in 1935–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Medical definitions for embryonic shield (1 of 2)

embryonic shield

n.

embryonic disk

Medical definitions for embryonic shield (2 of 2)

embryonic disk

n.

A platelike mass of cells in the blastocyst from which a mammalian embryo develops.embryonic shield
germinal disk
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.