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Webster 1913 Edition
Microspore
Mi′cro-spore
(mī′krō̍-spōr)
, Noun.
[
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
.