arthro-youdaoicibaDictYouDict[arthro- 词源字典]
word-forming element meaning "pertaining to the joints," from Greek arthro- (before vowels arth-), comb. form of arthron "joint," from PIE *ar-dhro-, from *ar- "to fit together;" see arm (n.1).[arthro- etymology, arthro- origin, 英语词源]