Breadcrumb Home > Dictionary > Index Z zona pellucida: Meaning and Definition of Find definitions for: zo•na pel•lu•ci•da Pronunciation: (zō'nu pu-l'si-du, pel-y'-), [key] — pl. zo•nae pel•lu•ci•dae the transparent, noncellular layer surrounding the ovum of mammals, often having radial striations. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. zonal geranium zonate TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: recherch Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language