zona pellucida

[ zoh-nuh puh-loo-si-duh, pel-yoo- ]
/ ˈzoʊ nə pəˈlu sɪ də, pɛlˈyu- /

noun, plural zo·nae pel·lu·ci·dae [zoh-nee puh-loo-si-dee, pel-yoo-] /ˈzoʊ ni pəˈlu sɪˌdi, pɛlˈyu-/. Anatomy.

the transparent, noncellular layer surrounding the ovum of mammals, often having radial striations.

Origin of zona pellucida

From New Latin, dating back to 1835–45; see origin at zone, pellucid
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Medicine definitions for zona pellucida

zona pellucida

[ pə-lōōsĭ-də ]

n.

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

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.