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Definition of radiotherapy

radiotherapy

/ˌreɪ.di.oʊˈθɛr.ə.pi/
ra · di · o · ther · a · py
Adverb:radiotherapeutically
•
Plural:radiotherapies
•
Adjective:radiotherapeutic
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radiotherapy Lexical Profile

radiotherapy Game Scores & Validity

• noun

1

The medical treatment of disease, especially cancer, using X-rays or similar forms of high-energy ionizing radiation to destroy malignant cells or shrink tumors.

Example

"Following the surgical removal of the tumor, the oncologist recommended a six-week course of radiotherapy."

Synonyms
View all synonyms for radiotherapy

• Rhymes for radiotherapy

• Nearby Words

radiology
radioman
radiometer
radiotherapy
radiothon
radish
radium

Word Origin & Etymology

Coined in the late 19th century from the combining form radio- (from Latin radius, meaning 'ray' or 'beam') and therapy (from Ancient Greek therapeia, meaning 'healing' or 'medical treatment').

Cite this Entry

Wordmom. (2026). Definition of Radiotherapy. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/radiotherapy
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