< Greek, combining form of árthron a joint; akin to Latinartus (see article)
British Dictionary definitions for arthro-
arthro-
combining form
1.
indicating a joint: arthritis, arthropod
Word Origin
from Greek arthron
Word Origin and History for arthro-
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).