Radiotherapy is the treatment of diseases such as cancer by using radiation.
radiotherapy in British English
(ˌreɪdɪəʊˈθɛrəpɪ)
noun
the treatment of disease, esp cancer, by means of alpha or beta particles emitted from an implanted or ingested radioisotope, or by means of a beam of high-energy radiation
Compare chemotherapy
Derived forms
radiotherapeutic (ˌreɪdɪəʊˌθɛrəˈpjuːtɪk)
adjective
radiotherapeutically (ˌradioˌtheraˈpeutically)
adverb
radiotherapist (ˌradioˈtherapist)
noun
radiotherapy in American English
(ˌreɪdioʊˈθɛrəpi)
noun
the treatment of disease by the use of X-rays or rays from a radioactive substance
Word origin
radio- + therapy
Examples of 'radiotherapy' in a sentence
radiotherapy
After surgery and radiotherapy, the muscles in her right arm were stiff and tight.