Share this entry
vitelline Line breaks: vi¦tel|line
Pronunciation: /vɪˈtɛlʌɪn/
/vʌɪˈtɛlʌɪn/ /vɪˈtɛlɪn/

Definition of vitelline in English:


Zoology & Embryology
Relating to the yolk (or yolk sac) of an egg or embryo, or to yolk-producing organs: the vitelline arteries
More example sentences
  • At the second stage, when the sperm cell reaches the vitelline envelope, other recognition molecules allow bindin of the correct species to attach the sperm tightly to the egg.
  • From these observations and following experiments involving membrane removals, the authors concluded that the vitelline and embryonic membranes are essential to osmoregulation during development.
  • The ventral follicle cells produce proteins, like pipe, that are only deposited in the ventral vitelline envelope.


Late Middle English (in the sense 'coloured like egg yolk'): from medieval Latin vitellinus, from vitellus (see vitellus).

Definition of vitelline in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources