/roh zay"sheuhs/ , adj.
1. belonging to the plant family Rosaceae. Cf. rose family .
2. having a corolla of five broad petals, like that of a rose.
3. like a rose; roselike: rosaceous loveliness.
4. rose-colored; rosy.
[ 1725-35; rosaceus made of roses, equiv. to ros ( a ) ROSE 1 + -aceus -ACEOUS ]