biomarker

noun

bio·​mark·​er ˈbī-ō-ˌmär-kər 

: 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

Recent Examples on the Web

Overall, Shadyab said, understanding that this biomarker can be observed many years before dementia or mild cognitive impairment symptoms appear offers a chance for intervention. —Paul Sisson, San Diego Union-Tribune, 12 Mar. 2026

The program uses biomarkers and wearable data to spot early health changes firefighters may not detect on their own. —Angelica Stabile, FOXNews.com, 9 Mar. 2026

Yes, according to a new study of nearly 1,000 older adults, which found people who took a multivitamin for two years showed slower changes in several biomarkers (biological indicators) linked to aging. —Tom Gavin, EverydayHealth.com, 9 Mar. 2026

These clocks, or biomarkers, analyze small changes in DNA over time. —Lindsey Leake, NBC news, 9 Mar. 2026

Word History

First Known Use

1973, in the meaning defined above

Rhymes for biomarker

• barker
• darker
• marker
• starker

Medical Definition

biomarker

noun

bio·​mark·​er ˈbī-ō-ˌmär-kər 

: 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 change

—Janet Raloff