'Vitellus' definitions:

Definition of 'vitellus'

From: WordNet
noun
Nutritive material of an ovum stored for the nutrition of an embryo (especially the yellow mass of a bird or reptile egg) [syn: yolk, vitellus]

Definition of 'Vitellus'

From: GCIDE
  • Vitellus \Vi*tel"lus\, n. [L., the yolk of an egg.] [1913 Webster]
  • 1. (Biol.) The contents or substance of the ovum; egg yolk. See Illust. of Ovum. [1913 Webster]
  • 2. (Bot.) Perisperm in an early condition. [1913 Webster]