zona pellucida

zona pellucida

[zoh-nuh puh-loo-si-duh, pel-yoo-]
noun, plural zonae pellucidae [zoh-nee puh-loo-si-dee, pel-yoo-] . Anatomy.
the transparent, noncellular layer surrounding the ovum of mammals, often having radial striations.

1835–45; < Neo-Latin; see zone, pellucid

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Medical Dictionary

zona pellucida zona pel·lu·ci·da (pə-lōō'sĭ-də, pěl-yōō'-)
The thick solid transparent outer membrane of a developed mammalian ovum. Also called oolemma.

The American Heritage® Stedman's Medical Dictionary
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