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doc Definition of microspore
    English to English
    noun
  • smaller of the two types of spore produced in heterosporous plants; develops in the pollen sac into a male gametophyte
  • source: WordNet 3.0
  • 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.
  • source: Webster 1913
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