biomarker

noun

bio·​mark·​er ˈbī-ō-ˌmär-kər How to pronounce biomarker (audio)
: a distinctive biological or biologically derived indicator (such as a metabolite) of a process, event, or condition (such as aging, disease, or oil formation)

Examples of biomarker in a Sentence

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Additionally, while the initial tests involved the monitoring of inflammation, the researchers believe that the technology could ultimately be utilized to monitor other symptoms by detecting other biomarkers. New Atlas, 14 Jan. 2026 The key biomarkers for women, Comite says, include thyroid function tests, hormone level tests, nutrient status labs, and metabolic markers, such as fasting insulin, fasting glucose, and hemoglobin A1c. Alexa Mikhail, Flow Space, 14 Jan. 2026 Researchers observed the horses’ behavior, as well as collecting data on their heart rate and the level of cortisol in their saliva, a key biomarker for stress. Jack Guy, CNN Money, 14 Jan. 2026 The wristband works through LifeOS, Luna’s adaptive AI engine, to integrate with Siri and utilize biomarker data from Apple Health, Google Fit, Clue, Kindbody, and other data-collecting apps. Tom Gavin, EverydayHealth.com, 9 Jan. 2026 See All Example Sentences for biomarker

Word History

First Known Use

1973, in the meaning defined above

Time Traveler
The first known use of biomarker was in 1973

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Cite this Entry

“Biomarker.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biomarker. Accessed 15 Jan. 2026.

Medical Definition

biomarker

noun
bio·​mark·​er ˈbī-ō-ˌmär-kər How to pronounce biomarker (audio)
: a distinctive biological or biologically derived indicator (as a biochemical metabolite in the body) of a process, event, or condition (as aging, disease, or exposure to a toxic substance)
age-related biomarkers of disease and degenerative changeJanet Raloff
Last Updated: - Updated example sentences
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