zona pellucida

noun (1)
zo·​na pel·​lu·​ci·​da | \ ˌzō-nə-pə-ˈlü-sə-də How to pronounce zona pellucida (audio) , -pel-ˈyü-\
plural zonae pellucidae\ ˌzō-​(ˌ)nē-​pə-​ˈlü-​sə-​(ˌ)dē How to pronounce zonae pellucidae (audio) , ˌzō-​ˌnī-​pə-​ˈlü-​sə-​ˌdī , -​pel-​ˈyü-​ \

Definition of zona pellucida

 (Entry 1 of 2)

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

zona radiata

noun (2)
zona ra·​di·​a·​ta | \ -ˌrādēˈätə, -ˈātə\
plural zonae radiatae\ -​ˈätˌē , -​ˈātˌē , -​tˌī \

Definition of zona radiata (Entry 2 of 2)

: zona pellucida especially : one having unusually distinct striations

First Known Use of zona pellucida

Noun (1)

1841, in the meaning defined above

History and Etymology for zona pellucida

Noun (1)

New Latin, transparent zone

Noun (2)

New Latin, radiate zone

Keep scrolling for more

Learn More about zona pellucida

Statistics for zona pellucida

Look-up Popularity

Time Traveler for zona pellucida

The first known use of zona pellucida was in 1841

See more words from the same year

Keep scrolling for more

More Definitions for zona pellucida

zona pellucida

noun
zona pel·​lu·​ci·​da | \ -pə-ˈlü-sə-də How to pronounce zona pellucida (audio) \

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

Comments on zona pellucida

What made you want to look up zona pellucida? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a period when something is suspended

Get Word of the Day daily email!

Test Your Vocabulary

Summer 2019 Words of the Day Quiz

  • a-bowl-of-peach-sorbet-with-cut-peaches-next-to-it
  • Which is a synonym of desideratum?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!