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vitelline Syllabification: vi·tel·line
Pronunciation: /vəˈtelən/

Definition of vitelline in English:


Zoology or Embryology
Of or relating to the yolk (or yolk sac) of an egg or embryo, or to yolk-producing organs.
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 'colored like egg yolk'): from medieval Latin vitellinus, from vitellus (see vitellus).

Definition of vitelline in:
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