Definition of vitelline membrane in English:

vitelline membrane

Syllabification: vi·tel·line mem·brane

noun

Embryology
  • A transparent membrane surrounding and secreted by the fertilized ovum, preventing the entry of further spermatozoa.
    More example sentences
    • Each embryo is surrounded, from exterior to interior, by the chorion, the vitelline membrane and the embryonic membrane.
    • The cortical granule contents contribute to the vitelline membrane to form the fertilization membrane, and also provide a hyaline layer between it and the egg's plasma membrane.
    • Transcript destabilization fails in mutants with a defective vitelline membrane.

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a slit made by cutting with a saw