Search Result for "perisperm": 
Wordnet 3.0

NOUN (1)

1. the nutritive tissue outside the sac containing the embryo in some seeds; 



The Collaborative International Dictionary of English v.0.48:

Perisperm \Per"i*sperm\, n. [F. p['e]risperme. See Peri-, and
   Sperm.] (Bot.)
   The albumen of a seed, especially that portion which is
   formed outside of the embryo sac. -- Per`i*sper"mic, a.
   [1913 Webster] Perispheric


WordNet (r) 3.0 (2006):

perisperm
    n 1: the nutritive tissue outside the sac containing the embryo
         in some seeds