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.

Nearby words

zona, zona fasciculata, zona glomerulosa, zona hemorrhoidalis, zona ophthalmica, zona pellucida, zona reticularis, zona tecta, zonal, zonal geranium, zonal necrosis

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-lōō′sĭ-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.