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Meaning of delamination

de•lam•i•na•tion

Pronunciation: (dē-lam"u-nā'shun), [key]
— n.
  1. a splitting apart into layers.
  2. the separation of a primordial cell layer into two layers by a process of cell migration.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.