sarcopenia

noun

sar·​co·​pe·​nia ˌsär-kō-ˈpē-nē-ə How to pronounce sarcopenia (audio)
: reduction in skeletal muscle mass due to aging

Examples of sarcopenia 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.
Even the most superb body begins to diminish in a person’s early 30s, thanks to the onset of sarcopenia, which sounds like a canker but means the incremental decline of muscle mass. Sally Jenkins, The Atlantic, 18 Dec. 2025 This is called sarcopenia, or the loss of muscle strength and function over time. Julia Landwehr, Health, 1 Dec. 2025 In addition to countering sarcopenia, a second reason for consuming more protein is that older bodies are less efficient in just about everything. Bryant Stamford, Louisville Courier Journal, 9 Oct. 2025 Many healthcare providers use grip strength tests to assess sarcopenia, muscle loss that occurs as you age. Aubrey Bailey, Verywell Health, 8 Sep. 2025 In other words, combating or reversing sarcopenia, or both, may be best done with a proper resistance-training program that prioritizes improving strength. Zachary Gillen, Discover Magazine, 19 Oct. 2023

Word History

Etymology

sarco- + -penia

First Known Use

1991, in the meaning defined above

Time Traveler
The first known use of sarcopenia was in 1991

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Cite this Entry

“Sarcopenia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sarcopenia. Accessed 2 Jan. 2026.

Medical Definition

sarcopenia

noun
sar·​co·​pe·​nia ˌsär-kō-ˈpē-nē-ə How to pronounce sarcopenia (audio)
: reduction in skeletal muscle mass due to aging
Age-related sarcopenia is a key component of frailty.Alessandro Laviano, The New England Journal of Medicine
Last Updated: - Updated example sentences
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