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Noun: vitelline sac
  1. Membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional
    - yolk sac, umbilical vesicle, vesicula umbilicus

Derived forms: vitelline sacs

Type of: sac

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vitamin K1
vitamin K3
vitamin M
vitamin P
vitamin pill
vitamin-deficiency diet
vitaminise
vitaminize
vitelline
vitelline circulation
vitelline sac
vitellus
Vithar
Vitharr
Viti Levu
vitiate
vitiated
vitiation
viticultural
viticulture
viticulturist