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

At first, Kristine, who worked in oncology, brushed it off. —Jordan Greene, PEOPLE, 21 May 2026

The two first signed a deal in February 2025 for which Genesis received $30 million upfront to collaborate on two targets in oncology. —Amy Feldman, Forbes.com, 20 May 2026

The broader challenge for Thyme Care, and the oncology space generally, is showing consistent savings and clinical value to health plans at scale. —Ellen Sheng, CNBC, 19 May 2026

Brian Slomovitz, director of gynecologic oncology and co-chair of the Cancer Research Committee at Mount Sinai Medical Center in Miami Beach, applauded this development in a separate interview with Fox News Digital. —Angelica Stabile, FOXNews.com, 18 May 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