'Endosperm' definitions:
Definition of 'endosperm'
(from WordNet)
noun
Nutritive tissue surrounding the embryo within seeds of flowering plants
Definition of 'Endosperm'
From: GCIDE
- Endosperm \En"do*sperm\, n. [Endo- + Gr. ? seed.] (Bot.) The albumen of a seed; -- limited by recent writers to that formed within the embryo sac. [1913 Webster]