zona pellucida

zona pellucida definition - medical

zona pel·lu·ci·da (pə-lo͞oˈsĭ-də)

noun
The thick solid transparent outer membrane of a developed mammalian ovum. Also called oolemma.

The American Heritage® Medical Dictionary Copyright © 2009 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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