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

Top and bottom line beats, and its key growth drugs, Tremfya in immunology and Darzalex in oncology, also topped estimates. —Jim Cramer, CNBC, 14 Apr. 2026

However, the company says this approach could potentially be applicable across oncology. —Noelle Harff, San Diego Union-Tribune, 13 Apr. 2026

Physician practices, such as community oncology practices, will be reimbursed at the lower MFP but must acquire the drug at higher market rates. —Torie Bosch, STAT, 11 Apr. 2026

The first one will be at Bellevue Hospital in Kips Bay and have direct access to specialty services, including oncology, cardiology and neurology. —Alexa Herrera, CBS News, 7 Apr. 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