vitelline

 
Pronunciation: /vɪˈtɛlʌɪn, vʌɪ-, -lɪn/

adjective

Zoology & Embryology
  • relating to the yolk (or yolk sac) of an egg or embryo, or to yolk-producing organs: the vitelline arteries

Origin:

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