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单词 micropyles
释义

micropyle /mīˈkrə-pīl/

noun
  1. The orifice in the coats of the ovule leading to the apex of the nucellus, through which the pollen tube commonly enters (botany)
  2. An opening by which a spermatozoon may enter an ovum (zoology)
ORIGIN: Gr mikros little, and pylē gate

micropyˈlar adjective

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更新时间:2024/12/23 9:17:29