creatine kinase

noun

: any of three isoenzymes found especially in vertebrate skeletal and myocardial muscle that catalyze the transfer of a high-energy phosphate group from phosphocreatine to ADP with the formation of ATP and creatine

Examples of creatine kinase in a Sentence

Recent Examples on the Web
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Blood tests might reveal elevated creatine kinase levels, a sign of muscle cell damage.101 A muscle biopsy (tissue sample) is usually taken from the thigh muscle. Francisco J. Rivera Rosario, Health, 20 Feb. 2025 Some studies, such as a 2014 meta-analysis in the British Journal of Sports Medicine, suggest wearing compression garments during a tough exercise session can decrease levels of creatine kinase, a marker of muscle damage. Cindy Kuzma, SELF, 5 Nov. 2024

Word History

First Known Use

1964, in the meaning defined above

Time Traveler
The first known use of creatine kinase was in 1964

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Cite this Entry

“Creatine kinase.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/creatine%20kinase. Accessed 17 Apr. 2025.

Medical Definition

creatine kinase

noun
: any of three isoenzymes found especially in vertebrate skeletal and myocardial muscle and the brain that catalyze the transfer of a high-energy phosphate group from phosphocreatine to ADP with the formation of ATP and creatine and typically occur in elevated levels in the blood following injury to brain or muscle tissue

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