ra·dio·ther·a·py
ˌrād-ē-ō-ˈther-ə-pē
plural radiotherapies
: the treatment of disease by means of radiation (as X-rays)
called also radiation therapy, radium therapy
compare radiodiagnosisCite this Entry
“Radiotherapist.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/radiotherapist. Accessed 12 Jul. 2026.
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