Webster 1913 Edition
[Gr.[GREEK][GREEK][GREEK] a cupshaped hollow, fr. [GREEK][GREEK][GREEK]. See
One of the patches of villi found in some forms of placenta.
A leaf borne by the caulicle or radicle of an embryo; a seed leaf.
☞ 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.
Webster 1828 Edition
1.In botany, the perishable lobe or placenta of the seeds of plants. It involves and nourishes the embryo plant, and then perishes. Some seeds have two lobes; others one only, and others none.
2.In anatomy, a little glandular body adhering to the chorion of some animals.
3.A genus of plants, navel-wort, or kidney-wort, of several species.
See also: cotylédon
cotyledon (plural cotyledons)
- (botany) The leaf of the embryo of a seed-bearing plant; after germination it becomes the first leaves of the seedling.
leaf of the embryo of a seed-bearing plant