ˌrōdəˈdendrən noun
Etymology: New Latin, from Latin, from Greek, from rhodon rose + dendron tree — more at rose , dendr-
1. capitalized : a genus of shrubs or trees (family Ericaceae) that are native to the cooler regions of the northern hemisphere and are cultivated widely and that have alternate short-petioled often leathery leaves scattered or in clusters at the branch ends and flowers in terminal umbellate racemes
2. -s : any of various plants of the genus Rhododendron with persistent leathery leaves and campanulate flowers — compare azalea