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

Including biomarkers is perhaps the most controversial possible change. —Allison Parshall, Scientific American, 28 Jan. 2026

Pérez Zaballos, who lives in Paris, was working at the pharmaceutical company Merck, where she was involved in research identifying a biomarker for a rare cancer. —Theresa Gaffney, STAT, 26 Jan. 2026

The methodology involves a patented Metabolic Code, which analyzes more than 70 key biomarkers across five health triads. —Jennifer Weil, Footwear News, 20 Jan. 2026

Blood and saliva sampling to measure immune biomarkers and examine how space alters the immune system. —Matthew Glasser, ABC News, 20 Jan. 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