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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 cot·y·le·don /ˌkɑtəˈlidṇ/

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 cot·y·le·don /ˌkɑtḷˈɪdṇ/ 名詞

From: Webster's Revised Unabridged Dictionary (1913)

 Cot·y·le·don n.
 1. Anat. One of the patches of villi found in some forms of placenta.
 2. Bot. A leaf borne by the caulicle or radicle of an embryo; a seed leaf.
 Note:Many plants, as the bean and the maple, have two cotyledons, the grasses only one, and pines have several. In one African plant (Welwitschia) the cotyledons are permanent and grow to immense proportions.

From: WordNet (r) 2.0

      n : embryonic leaf in seed-bearing plants [syn: seed leaf]