vitellus

2 definitions found

vitellus - Collaborative International Dictionary of English v.0.48 :

  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]

vitellus - WordNet (r) 2.1 (2005) :

  vitellus
      n 1: 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]