1. radiotherapy

noun. (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance.


  • X-ray therapy
  • therapy
  • radiation therapy
  • phototherapy
  • Curietherapy
  • irradiation
  • actinotherapy
  • radium therapy

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Sentences with radiotherapy

1. Noun, singular or mass
Other radioisotopes are used in radiotherapy and gamma sterilization in medicine; one in two individuals in the western world will benefit from nuclear medicine in their lifetime.

2. Verb, base form
Some cats are too ill for thyroid surgery from other illness, such as heart disease, and others don't have access to radiotherapy.