hydrangea (n.)youdaoicibaDictYouDict[hydrangea 词源字典]
1753, coined in Modern Latin by Linnæus as compound of Greek hydr-, stem of hydor "water" (see water (n.1)) + angeion "vessel, capsule" (see angio-); so called from the shrub's cup-shaped seed pods.[hydrangea etymology, hydrangea origin, 英语词源]