hydrangea (n.) Look up hydrangea at Dictionary.com
1753, coined in Modern Latin by Linnaeus as a compound of Greek hydr-, stem of hydor "water" (from suffixed form of PIE root *wed- (1) "water; wet") + angeion "vessel, capsule" (see angio-); so called from the shrub's cup-shaped seed pods. Native to China, introduced in England 1790.