megaspore


megaspore

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mega·spore 'meg-ə-.spō(ə)r, -.spȯ(ə)r n
1) a spore in heterosporous plants that gives rise to female gametophytes and is generally larger than a microspore
2) MACROSPORE
mega·spor·ic .meg-ə-'spōr-ik, -'spȯr- adj

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mega·spore (megґə-spor) [mega- + spore] 1. macrospore. 2. macroconidium. 3. one of four haploid spores, usually larger than the microspore, formed in the megasporangium from a megaspore mother cell, and from which the megagametophyte, or female gametophyte, develops.

Medical dictionary. 2011.