chorioallantois Hear it!

chorioallantois definition

cho·rio·al·lan·tois (kôr′ē ō′ə lan′tō is)

noun

an enveloping vascular fetal membrane formed by the fusion of chorion and allantois in reptiles, birds, and most mammals: that of chicks is used as a culture medium for growing viruses

Etymology: ModL: see chorion & allantois

Related Forms:

  • chorioallantoic cho′·rio·al′·lan·to′ic (-al′ən tō′ik) adjective

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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