英文字典中文字典Word104.com

The Collaborative International Dictionary of English v.0.48 (gcide)

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.
[1913 Webster]

2. (Bot.) A leaf borne by the caulicle or radicle of an
embryo; a seed leaf.
[1913 Webster]

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.
[1913 Webster]

請選擇你想看的字典辭典：

單詞	字典	翻譯
Cotyledon	查看　Cotyledon　在Google字典中的解釋	Google英翻中〔查看〕
Cotyledon	查看　Cotyledon　在Yahoo字典中的解釋	Yahoo英翻中〔查看〕