combining form

variants or before a vowel arthr-
: joint

Word History


borrowed from Greek, combining form from árthron "joint, articulation," probably nominalized form of an adjective meaning "joined," going back to the Indo-European verbal base *h2er- "fit, join" + *-dhro-, adjective suffix — more at arm entry 3

Dictionary Entries Near arthro-

Cite this Entry

“Arthro-.” Dictionary, Merriam-Webster, Accessed 26 Sep. 2023.

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