cotyledon

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See also: cotylédon

English[edit]

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Pronunciation[edit]

  • (UK) IPA(key): /kɒtɪˈliːdn̩/
  • (IUS) IPA(key): /ˌkɑtl̩ˈiːdn̩/

Etymology[edit]

From Latin cotyledon, from Ancient Greek κοτυληδών (kotulēdṓn, cup-shaped cavity), from κοτύλη (kotúlē, cup).

Noun[edit]

cotyledon (plural cotyledons)

  1. (physiology) Each of the patches of vili on the foetal chorion of ruminants and some other mammals.
    • 1997, Roy Porter, The Greatest Benefit to Mankind, Folio Society 2016, p. 72:
      Forced to apply animal findings to humans, his human womb also had cotyledons like a dog's.
  2. (botany) The leaf of the embryo of a seed-bearing plant; after germination it becomes the first leaves of the seedling.

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