Perisperm

2 definitions found

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

  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



From WordNet (r) 2.0 [wn]:

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