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

The doctor conducted a procedure and then referred him to Kukreja, the director of urological oncology at UC Health. —Jackson Thompson, FOXNews.com, 8 Aug. 2025

Intense Competitive Landscape: The oncology space is highly competitive. —Trefis Team, Forbes.com, 29 July 2025

The hospital said the philanthropist’s donation will give it the ability to hire more physicians and expand oncology subspecialties at the location. —Michelle Marchante july 25, Miami Herald, 25 July 2025

Sanders complimented his care, and left it to Janet Kukreja, the director of urological oncology at the University of Colorado School of Medicine, to deliver the big news. —Eben Novy-Williams, Sportico.com, 30 July 2025

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