Pronunciation: (rō-zā'shus), [key]
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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.