Also especially before a vowel, arthr-.

Origin of arthro-

< Greek, combining form of árthron a joint; akin to Latin artus (see article) Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for arthro-


before a vowel arthr-

combining form
  1. indicating a jointarthritis; arthropod

Word Origin for arthro-

from Greek arthron
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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).

Online Etymology Dictionary, © 2010 Douglas Harper

arthro- in Medicine


  1. Joint:arthropathy.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.