on·​col·​o·​gy än-ˈkä-lə-jē How to pronounce oncology (audio)
: 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 The attorney general’s office noted a breach of that agreement at Mission, citing diminished care in the hospital’s oncology unit and its emergency department. Gretchen Morgenson, NBC News, 13 Nov. 2023 Our colleague Andrew Joseph joins us to explain the decades-old cancer-treating technology that had its star turn at this week’s big oncology conference in Europe. Andrew Joseph, STAT, 26 Oct. 2023 The hospital also conducts 100,000 radiation oncology treatments annually. Jessica Bartlett, BostonGlobe.com, 14 Sep. 2023 The oncology ward was breathing a sigh of relief, its inhabitants rejoicing in a temporary timeout, losing themselves to the beauty and healing power of the music. Taiwo Balogun, Peoplemag, 17 Aug. 2023 How old-fashioned radiation became the hot new thing in oncology For years, scientists have known that blasts of radiation can decimate tumors. Damian Garde Reprints, STAT, 8 Nov. 2023 The only oncology hospital in the Gaza Strip was days away from halting services because of the shortages, Palestinian officials said. Amanda Coletta, Washington Post, 17 Oct. 2023 There was obesity and liver disease, and computational biology and oncology. Andrew Joseph, STAT, 9 Oct. 2023 Mirati marks the second San Diego biotech snatched up by Bristol Myers Squibb recently for its oncology portfolio. Natallie Rocha, San Diego Union-Tribune, 9 Oct. 2023 See More

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'oncology.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


onco- + -logy

First Known Use

circa 1857, in the meaning defined above

Time Traveler
The first known use of oncology was circa 1857

Dictionary Entries Near oncology

Cite this Entry

“Oncology.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/oncology. Accessed 5 Dec. 2023.

Kids Definition


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


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

More from Merriam-Webster on oncology

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!