[mahy-kruh-spawr, ‐spohr]
noun Botany.
the smaller of the two kinds of spores characteristically produced by seed plants and some fern allies, developing into a male gametophyte. Compare megaspore,
a pollen grain.

1855–60; micro- + -spore

microsporic [mahy-kruh-spawr-ik, spor] , microsporous [mahy-kruh-spawr-uhs, spohr, mahy-kros-per-uhs] , adjective
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World English Dictionary
microspore (ˈmaɪkrəʊˌspɔː)
1.  Compare megaspore the smaller of two types of spore produced by some spore-bearing plants, which develops into the male gametophyte
2.  the pollen grain of seed plants

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
microspore   (mīk'rə-spôr')  Pronunciation Key 
One of the two types of haploid spores produced by a heterosporous plant. Microspores develop into male gametophytes and are usually smaller than megaspores. In angiosperms, the microspore develops into the pollen grain.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Isolated microspore culture is a special field of haploid technology.
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