cotyledon

a. Having no seed lobes, as the dodder; also applied to plants which have no true seeds, as ferns, mosses, etc. [ 1913 Webster ]

n. [ Gr.&unr_;&unr_;&unr_; a cupshaped hollow, fr. &unr_;&unr_;&unr_;. 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 ]

☞ 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 ]

a. Of, pertaining to, or resembling, a cotyledon. [ 1913 Webster ]

a. Having a cotyledon; tufted; as, the cotyledonary placenta of the cow. [ 1913 Webster ]