preformation Hear it!

preformation definition

pre·for·ma·tion (prē′fôr mā′s̸hən)

noun

  1. previous formation
  2. Biol. a former theory that every germ cell contains every part of the future organism in miniature, development being merely growth in size

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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