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.
Sitting for hours on end compresses joints and reduces circulation of synovial fluid, the body’s natural joint lubricant. Dana Santas, CNN Money, 22 June 2026 Stay Hydrated Staying well-hydrated is important for joint health, as water helps produce synovial fluid that cushions joints and reduces friction between bones.9 Dehydration can lower synovial fluid levels, leading to joint stiffness and pain. Lana Barhum, Verywell Health, 28 May 2026 Sitting for extended periods, staying in the same position during sleep, or otherwise not moving much can reduce levels of synovial fluid, the gel-like substance that lubricates joints. Kristen Fischer, Health, 17 Apr. 2026 Though cold weather doesn’t have a direct impact on joints, Travis adds, it’s been shown to lead to thickening of the synovial fluid, which lubricates your joints and acts as a shock absorber. Alyssa Ages, Outside, 22 Feb. 2026 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

Browse Nearby Words

Cite this Entry

“Synovial fluid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/synovial%20fluid. Accessed 28 Jun. 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

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