oncology

noun

on·​col·​o·​gy än-ˈkä-lə-jē How to pronounce oncology (audio)
äŋ-
: a branch of medicine concerned with the prevention, diagnosis, treatment, and study of cancer
oncological adjective
or oncologic
oncologist noun

Examples of oncology in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Pembrolizumab, sold under the brand name Keytruda, was the top-grossing oncology drug in both clinics and hospitals, the ASHP report said. Ken Alltucker, USA Today, 30 Apr. 2026 Second, the same precision-medicine approaches that are now transforming oncology must be applied to mental illness, identifying biomarkers early enough to alter disease trajectory. Eric J. Nestler, STAT, 28 Apr. 2026 In oncology clinics in Arizona and California, for instance, two bilingual lay health workers made regular phone calls to cancer patients over age 75 to assess symptoms like pain, nausea, breathlessness, and depression. Paula Span, Miami Herald, 28 Apr. 2026 Revolution Medicines, a clinical oncology company, released a press release detailing the results of a clinical trial for a new medication on Monday, April 13. Eva Flowe april 21, Charlotte Observer, 21 Apr. 2026 See All Example Sentences for oncology

Word History

Etymology

onco- + -logy

First Known Use

circa 1857, in the meaning defined above

Time Traveler
The first known use of oncology was circa 1857

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Cite this Entry

“Oncology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oncology. Accessed 4 May. 2026.

Kids Definition

oncology

noun
on·​col·​o·​gy än-ˈkäl-ə-jē How to pronounce oncology (audio)
: 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- How to pronounce oncology (audio)
plural oncologies
: a branch of medicine concerned with the prevention, diagnosis, treatment, and study of cancer
oncological adjective
also oncologic

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