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单词 hilum
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WordReference Random House Unabridged Dictionary of American English © 2024
hi•lum  (hī′ləm),USA pronunciation n., pl. -la 
    (-lə).USA pronunciation 
  1. Botany
    • the mark or scar on a seed produced by separation from its funicle or placenta.
    • the nucleus of a granule of starch.
  2. Fungi[Mycol.]a mark or scar on a spore at the point of attachment to the spore-bearing structure.
  3. Anatomythe region at which the vessels, nerves, etc., enter or emerge from a part.
  • Neo-Latin; Latin: little thing, trifle; see nil
  • 1650–60
hi′lar, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
hilum /ˈhaɪləm/ n ( pl -la / -lə/)
  1. a scar on the surface of a seed marking its point of attachment to the seed stalk (funicle)
  2. a deep fissure or depression on the surface of a bodily organ around the point of entrance or exit of vessels, nerves, or ducts
Etymology: 17th Century: from Latin: trifle; see nihil
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更新时间：2025/2/23 7:25:29