macrospore

2 definitions found

macrospore - Collaborative International Dictionary of English v.0.48 :

  Macrospore \Mac"ro*spore\, n. [Macro- + spore.] (Bot.)
     One of the specially large spores of certain flowerless
     plants, as Selaginella, etc.
     [1913 Webster]

macrospore - WordNet (r) 2.1 (2005) :

  macrospore
      n 1: larger of the two types of spore produced in heterosporous
           plants; develops in ovule into a female gametophyte [syn:
           megaspore, macrospore]