radiotherapy

noun ra·dio·ther·a·py \ˌrā-dē-ō-ˈther-ə-pē\

Definition of RADIOTHERAPY

: the treatment of disease with radiation (as X-rays)

— ra·dio·ther·a·pist \-pist\ noun

See radiotherapy defined for English-language learners

International Scientific Vocabulary

First Known Use: 1903

Medical Dictionary

noun ra·dio·ther·a·py \ˌrād-ē-ō-ˈther-ə-pē\

plural ra·dio·ther·a·pies

: the treatment of disease by means of radiation (as X-rays)—called also radiation therapy, radium therapy; compare radiodiagnosis

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