ˌrədˈbekēə, rüd- noun
Etymology: New Latin, from Olof Rudbeck died 1702 Swedish scientist + New Latin -ia
1. capitalized : a genus of No. American perennial herbs (family Compositae) having showy pedunculate flower heads with a hemispherical involucre, mostly yellow ray flowers, and a conical chaffy receptacle — see black-eyed susan , golden glow
2. -s : any plant of the genus Rudbeckia