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

Anna Forsythe,pharmacist & health economist, is Founder & President of Oncoscope-AI, a real-time oncology evidence platform. —Anna Forsythe, Forbes.com, 2 Sep. 2025

The new center will have two advanced linear accelerators for radiation oncology, with the potential to add a third, and will also have an in-house retail pharmacy and specialty pharmacy, according to Mount Sinai. —Miami Herald, 30 Aug. 2025

Its oncology expansion, including Trodelvy and cell therapies, opens new multibillion-dollar markets. —Tony Zhang, CNBC, 27 Aug. 2025

Hansen, 50, initially wanted to work in an oncology department after seeing how well nurses cared for her mother after a cancer diagnosis. —Beth Warren, The Tennessean, 21 Aug. 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