cŏtylēdon, ŏnis, f., = κοτυληδών,
a plant, navelwort : Cotyledon umbilicus, Linn.; Plin. 25, 13, 101, § 159.
·noun One of the patches of villi found in some forms of placenta. II. Cotyledon ·noun A leaf borne...
Webster's Dictionary of the English Language