Dictionary
mi•cro•spore
Pronunciation: (mī'kru-spôr", -spōr"), [key]—
n. Bot.
1. the smaller of the two kinds of spores characteristically produced by seed plants and some fern allies, developing into a male gametophyte. Cf.
megaspore,
2. a pollen grain.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.