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单词 megaspore
释义

WordReference Random House Unabridged Dictionary of American English © 2024
meg•a•spore  (meg′ə spôr′, -spōr′),USA pronunciation n. [Bot.]
  1. Plant Biologythe larger of the two kinds of spores characteristically produced by seed plants and a few fern allies, developing into a female gametophyte. Cf. microspore. 
  2. Botanythe embryo sac of a flowering plant.
Also called macrospore. 
  • 1885–90; mega- + spore
meg•a•spor•ic  (meg′ə spôr′ik, -spor′-),USA pronunciation adj. 
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更新时间：2026/3/16 17:58:15