[ os-tee-oh-ahr-thrahy-tis ]

  1. the most common form of arthritis, usually occurring after middle age, marked by chronic breakdown of cartilage in the joints leading to pain, stiffness, and swelling.

Origin of osteoarthritis

First recorded in 1875–80; osteo- + arthritis
  • Also called degenerative joint disease.

Words Nearby osteoarthritis

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use osteoarthritis in a sentence

British Dictionary definitions for osteoarthritis


/ (ˌɒstɪəʊɑːˈθraɪtɪs) /

  1. chronic inflammation of the joints, esp those that bear weight, with pain and stiffness: Also called: degenerative joint disease

Derived forms of osteoarthritis

  • osteoarthritic (ˌɒstɪəʊɑːˈθrɪtɪk), adjective, noun

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

Scientific definitions for osteoarthritis


[ ŏs′tē-ō-är-thrītĭs ]

  1. A form of arthritis, occurring mainly in older people, that is characterized by chronic degeneration of the cartilage of the joints.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.