Hypertext Webster Gateway: "cotyledon"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
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.
From WordNet (r) 1.7 (wn)
cotyledon
n : embryonic leaf in seed-bearing plants [syn: {seed leaf}]
Additional Hypertext Webster Gateway Lookup
Gateway by dict@stokkie.net
stock only wrote the gateway and does not have any control over the contents;
see the Webster Gateway FAQ,
and also the Back-end/database links and credits.