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Cotyledon - Dictionary Definition and Overview |
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Cotyledon : (noun)
1: embryonic leaf in seed-bearing plants [syn: seed leaf]
Based on WordNet 2.0
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Cotyledon : \Cot`y*le"don\ (k?t`?-l?"d?n), n. [Gr.??? a cupshaped
hollow, fr. ???. See Cotyle.]
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.
Based on WordNet (r) 2.0 (August 2003)
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