GNU Collaborative International Dictionary of English

last match results

Found one definition

1.       
   Microspore , n. [Micro- + spore.] (Bot.) One of the exceedingly minute spores found in certain flowerless plants, as Selaginella and Isoetes, which bear two kinds of spores, one very much smaller than the other.  Cf. Macrospore.
   1913 Webster