microspore


mi·cro·spore

noun \ˈmī-krə-ˌspr\

Definition of MICROSPORE

:  any of the spores in heterosporous plants that give rise to male gametophytes and are generally smaller than the megaspore
mi·cro·spo·rous \ˌmī-krə-ˈspr-əs, mī-ˈkräs-pə-rəs\ adjective

Origin of MICROSPORE

International Scientific Vocabulary
First Known Use: 1847

mi·cro·spore

noun \ˈmī-krə-ˌspō(ə)r, -ˌsp(ə)r\   (Medical Dictionary)

Medical Definition of MICROSPORE

1
: any of the spores in heterosporous plants that give rise to male gametophytes and are generally smaller than the megaspore
2
: the smaller of two forms of spores produced by various protozoans (as radiolarians)—compare macrospore

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