Roseate \Ro"se*ate\, a. [Cf. L. roseus, rosatus, prepared from roses. See {Roseal}, {Rose}.] 1. Full of roses; rosy; as, roseate bowers. 2. resembling a rose in color or fragrance; esp., tinged with rose color; blooming; as, roseate beauty; her roseate lips. {Roseate tern} (Zo["o]l.), an American and European tern ({Sterna Dougalli}) whose breast is roseate in the breeding season.