Dictionary

zona pellucida

noun zo·na pel·lu·ci·da \ˌzō-nə-pə-ˈlü-sə-də, -pel-ˈyü-\
plural zo·nae pel·lu·ci·dae \-(ˌ)nē…-(ˌ)dē, -ˌnī…-ˌdī\

Definition of ZONA PELLUCIDA

:  the transparent more or less elastic noncellular outer layer or envelope of a mammalian ovum that is composed of glycoproteins

Origin of ZONA PELLUCIDA

New Latin, transparent zone
First Known Use: 1841

zona pellucida

noun zona pel·lu·ci·da \-pə-ˈlü-sə-də\   (Medical Dictionary)

Medical Definition of ZONA PELLUCIDA

:  the transparent more or less elastic noncellular glycoprotein outer layer or envelope of a mammalian ovum often traversed by numerous radiating striae

Illustration of ZONA PELLUCIDA

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