Definition of zona pellucida in English:

zona pellucida

Line breaks: zona pel|lu¦cida
Pronunciation: /ˌzəʊnə pɪˈluːsɪdə
 
/

noun (plural zonae pellucidae /ˌzəʊniː pɪˈluːsɪdiː/)

Anatomy & Zoology
  • The thick transparent membrane surrounding a mammalian ovum before implantation.
    More example sentences
    • At this stage the embryo releases itself from the zona pellucida still surrounding it, and implants into the uterine wall.
    • The embryo must hatch out of the zona pellucida prior to implantation into the uterine wall.
    • The secondary oocyte and the polar body remain surrounded by the zona pellucida and the cumulus oophorus.

Origin

mid 19th century: from Latin, literally 'pellucid girdle'.

More definitions of zona pellucida

Definition of zona pellucida in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day coloratura
Pronunciation: ˌkɒlərəˈtjʊərə
noun
elaborate ornamentation of a vocal melody