Arthro-: A prefix meaning joint, as in arthropathy and arthroscopic. Before a vowel, it becomes arthr-, as in arthralgia and arthritis. From the Greek word arthron for joint. Ultimately from an Indo-European root meaning to join or to fit together.
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The term arthritis refers to stiffness in the joints. See AnswerHealth Solutions From Our Sponsors
Reviewed on 3/29/2021