synovial fluid

noun

: a transparent viscid lubricating fluid secreted by a membrane of an articulation, bursa, or tendon sheath

Examples of synovial fluid 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 bones and cartilage are enclosed in a membrane that’s filled with an oily liquid called synovial fluid. Sarah Lindenfeld Hall, Popular Science, 7 Jan. 2026 Protects cartilage: Movement encourages the flow of blood and synovial fluid, which lubricates the joints, supports healthy cartilage, and helps absorb shock. Jakob Roze, Health, 31 Oct. 2025 In addition, the rhythmic movement of pedaling a bike helps lubricate arthritic joints with synovial fluid and can reduce pain levels later in the day.9 9. Tim Petrie, Verywell Health, 24 Sep. 2025 Lower levels of pro-inflammatory T helper 17 (TH17) cells were found in the lymph nodes, which drain synovial fluid, and the joints. New Atlas, 6 Aug. 2025 See All Example Sentences for synovial fluid

Word History

First Known Use

1846, in the meaning defined above

Time Traveler
The first known use of synovial fluid was in 1846

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Cite this Entry

“Synovial fluid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/synovial%20fluid. Accessed 13 Jan. 2026.

Medical Definition

synovial fluid

noun
: a transparent viscid lubricating fluid secreted by a membrane of an articulation, bursa, or tendon sheath

called also joint fluid, synovia

Last Updated: - Updated example sentences
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