radiation therapy

noun

: radiotherapy

Examples of radiation therapy 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.
After two surgeries and several rounds of radiation therapy over the past four years to treat a tumor, Irisleydis Tristá has spent the past seven months unable to get a CT scan to determine whether the cancer has grown or spread. — Andrea Rodríguez, Los Angeles Times, 2 July 2026 That information directly influences recommendations for radiation therapy, endocrine therapy, chemotherapy or other treatments designed to reduce the risk of recurrence. — Lauryn Higgins, Flow Space, 15 June 2026 Other risk factors for breast cancer in men include being over the age of 50, a family history of breast cancer, obesity, exposure to hormone and radiation therapy treatments, liver disease and certain conditions that affect the testicles, according to the CDC. — ABC News, 10 June 2026 The 83-year-old underwent radiation therapy in October 2025 and was also being treated using hormone therapy, a spokesperson said at the time. — Melina Khan, USA Today, 1 June 2026 See All Example Sentences for radiation therapy

Word History

First Known Use

1922, in the meaning defined above

Time Traveler
The first known use of radiation therapy was in 1922

Rhymes for radiation therapy

See All Rhymes for radiation therapy

Browse Nearby Words

radiation sickness
radiation therapy
radiative
See all Nearby Words

Cite this Entry

“Radiation therapy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radiation%20therapy. Accessed 10 Jul. 2026.

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Medical Definition

radiation therapy

noun
: radiotherapy

More from Merriam-Webster on radiation therapy

Britannica.com: Encyclopedia article about radiation therapy

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