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.
The company is known for its medication Humira, which is used to treat rheumatoid arthritis, Crohn’s disease, ulcerative colitis and other conditions, as well as the drugs Skyrizi, which treats plaque psoriasis, and Rinvoq for rheumatoid arthritis. Lisa Schencker, Chicago Tribune, 23 Feb. 2026 Growing research suggests that good oral hygiene is linked to a reduced risk of serious conditions, including Alzheimer’s disease and rheumatoid arthritis. Angelica Stabile, FOXNews.com, 21 Feb. 2026 In one recent study published in Bone Research, researchers found that impaired lymphatic drainage is associated with inflammatory conditions like osteoarthritis and rheumatoid arthritis. Avery Newmark, AJC.com, 20 Feb. 2026 Ginger helps relieve symptoms of rheumatoid arthritis by reducing inflammation. Lana Barhum, Verywell Health, 16 Feb. 2026 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 5 Mar. 2026.

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!

More from Merriam-Webster