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germinal disk

noun, Embryology.
Origin of germinal disk
1875-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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germinal-disk in Medicine

germinal disk n.
A flattened, disklike region of cells from which the embryo develops in the fertilized ovum of many vertebrate species. Also called embryonic disk.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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