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 Stretching first thing in the morning not only eases tension in tight muscles but also loosens stiff joints. Movement across joints from stretching and other exercises can help distribute synovial fluid within your joints. — Kristen Gasnick, Verywell Health, 5 May 2026 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 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

Rhymes for synovial fluid

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Browse Nearby Words

synovial capsule
synovial fluid
synovial joint
See all Nearby Words

Cite this Entry

“Synovial fluid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/synovial%20fluid. Accessed 7 Jul. 2026.

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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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