cotyledon
Pronunciation
  • (British) IPA: /kɒtɪˈliːdn̩/
  • (America) IPA: /ˌkɑtl̩ˈiːdn̩/
Noun

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.
Synonyms Translations


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