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zona pellucida

Syllabification: (zo·na pel·lu·ci·da)

Definition of zona pellucida

noun (plural zonae pellucidae /ˈzōˌnē pəˈlo͞osəˌdē, ˈzōˌnī pəˈlo͞osəˌdī/)

Anatomy & Zoology
  • the thick transparent membrane surrounding a mammalian ovum before implantation.

Origin:

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

zona pellucida in other Oxford dictionaries

Definition of zona pellucida in the British & World English dictionary