Ro-sā'ceous, a.

(-zā'shus), a. [Lat. rosaceus, from rosa, rose; It. & Sp. rosaceo, Fr. rosacé.] (Bot.) (a.) Composed of several petals, arranged like those of the rose; as, a rosaceous corol. Martyn. (b.) Pertaining to the rose family of plants; having flowers resembling those of the rose.