雙子葉植物
Dicotyledon \Di*cot`y*le"don\, n. [Pref. di- + cotyledon.] (Bot.) A plant whose seeds divide into two seed lobes, or cotyledons, in germinating.
dicotyledon n : flowering plant with two cotyledons; the stem grows by deposit on its outside [syn: {dicot}, {magnoliopsid}, {exogen}]