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Medical Dictionary

cotyledon

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noun cot·y·le·don \ˌkät-əl-ˈēd-ən\

Medical Definition of cotyledon

  1. 1:  a lobule of a mammalian placenta

  2. 2:  the first leaf or one of the first pair or whorl of leaves developed by the embryo of a seed plant or of some lower plants (as ferns)

  3. cot·y·le·don·ary \-ˈēd-ən-ˌer-ē\play adjective




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