rheumatoid arthritis

noun

: a usually chronic autoimmune disease that is characterized especially by pain, stiffness, inflammation, swelling, and sometimes destruction of joints
abbreviation RA
compare osteoarthritis

Examples of rheumatoid arthritis in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
In addition to advancing age and diets low in protein, other risk factors for osteoporosis include low calcium and vitamin D intake, hormone changes, a sedentary lifestyle, and certain health conditions (e.g., rheumatoid arthritis). Jonathan Purtell, Verywell Health, 13 June 2025 Common causes include osteoarthritis, rheumatoid arthritis, and past injuries. Brandi Jones, Health, 25 May 2025 Researchers are working to understand how a viral infection can cause persistent joint pain that closely resembles rheumatoid arthritis, an autoimmune disease. Ashley MacKin Solomon, San Diego Union-Tribune, 26 May 2025 Other drugs like baricitinib, which is approved to treat rheumatoid arthritis and acute Covid, and temelimab, an experimental drug often given to people with multiple sclerosis, are also being investigated as potential long Covid treatments. Katie Camero, NBC News, 11 Mar. 2025 See All Example Sentences for rheumatoid arthritis

Word History

First Known Use

1859, in the meaning defined above

Time Traveler
The first known use of rheumatoid arthritis was in 1859

Browse Nearby Words

Cite this Entry

“Rheumatoid arthritis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rheumatoid%20arthritis. Accessed 17 Jun. 2025.

Medical Definition

rheumatoid arthritis

noun
: a usually chronic disease that is considered an autoimmune disease and is characterized especially by pain, stiffness, inflammation, swelling, and sometimes destruction of joints
abbreviation RA

called also atrophic arthritis

compare osteoarthritis

More from Merriam-Webster on rheumatoid arthritis

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!