Vitellus

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [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]

From WordNet (r) 2.0 [wn]:

  vitellus
       n : nutritive material of an ovum stored for the nutrition of an
           embryo (especially the yellow mass of a bird or reptile
           egg) [syn: {yolk}]
       [also: {vitelli} (pl)]