oncology

noun

on·​col·​o·​gy än-ˈkä-lə-jē 

äŋ-

: a branch of medicine concerned with the prevention, diagnosis, treatment, and study of cancer

oncological

ˌäŋ-kə-ˈlä-ji-kəl 

adjective

or oncologic

ˌäŋ-kə-ˈlä-jik 

oncologist

än-ˈkä-lə-jist 

äŋ-

noun

Examples of oncology in a Sentence

Recent Examples on the Web

But the plant will be responsible for manufacturing the active ingredients for Lilly's other small-molecule medicines across several disease areas, such as cardiometabolic health, oncology, immunology and neuroscience. — Annika Kim Constantino, CNBC, 21 Sep. 2026

Jenny McCabe, who works in oncology research, said the squad is especially busy in football season with two weeknight practices. — Stephanie Stahl, CBS News, 14 Sep. 2026

Gilberto Lopes, chief of the division of medical oncology at Sylvester and another author of the study, added that the data did not establish a safe threshold for alcohol consumption. — Arkansas Online, 12 Sep. 2026

This applies across scenarios like validating patient eligibility, spotting subtle adverse events in complex oncology cohorts or standardizing multisite electronic data capture entries. — Anshima Raj, Forbes.com, 8 Sep. 2026

Word History

Etymology

onco- + -logy

First Known Use

circa 1857, in the meaning defined above

Rhymes for oncology

• anthology
• apology
• astrology
• biology
• christology
• chronology
• conchology
• cosmology
• cryptology
• cytology
• doxology
• ecology

Kids Definition

oncology

noun

on·​col·​o·​gy än-ˈkäl-ə-jē 

: a branch of medicine concerned with the study and treatment of tumors

Medical Definition

oncology

noun

on·​col·​o·​gy än-ˈkäl-ə-jē, äŋ- 

plural oncologies

: a branch of medicine concerned with the prevention, diagnosis, treatment, and study of cancer

oncological

ˌäŋ-kə-ˈläj-i-kəl 

adjective

also oncologic

-ik