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microspore n. 小胞子 小胞子 microspore n 1: smaller of the two types of spore produced in heterosporous plants; develops in the pollen sac into a male gametophyte Microspore \Mi"cro*spore\ (m[imac]"kr[-o]*sp[=o]r), 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]
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