vitellus

English Thesaurus

1. nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg) (noun.animal)

hypernym	:	food, nutrient,
definition	:	any substance that can be metabolized by an animal to give energy and build tissue (noun.tops)

part meronym	:	egg,
definition	:	animal reproductive body consisting of an ovum or embryo together with nutritive and protective envelopes; especially the thin-shelled reproductive body laid by e.g. female birds (noun.animal)