Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun vesicula_umbilicus

1 sense of vesicula umbilicus

Sense 1
yolk sac, vitelline sac, umbilical vesicle, vesicula umbilicus -- (membranous structure that functions as the circulatory system in mammalian embryos until the heart becomes functional)
       => sac -- (a structure resembling a bag in an animal)