cotyledon


Concise Oxford English Dictionary © 2008 Oxford University Press:
cotyledon /ˌkɒtɪˈliːd(ə)n/
noun
  • 1 Botany an embryonic leaf in seed-bearing plants, one or more of which are the first leaves to appear from a germinating seed.
  • 2 a succulent plant of the stonecrop family. [Genus Cotyledon.]
– derivatives
cotyledonary adjective.
– origin C16: from L., ‘navelwort’, from Gk kotulēdōn ‘cup-shaped cavity’.
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