primordium Hear it!

primordium definition

pri·mor·dium (prī môr′dē əm)

noun pl. primordia -·dia (-ə)

Embryology the first recognizable aggregation of cells that will form a distinct organ or part of the embryo

Etymology: ModL < L: see primordial

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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