radiotherapy

Noun

Synonyms: radiation therapy radiation actinotherapy irradiation

WordNet 3.0

Noun (1)

(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substanceSynonyms: radiation therapy radiation actinotherapy irradiation

Webster's Dictionary (GCIDE)

Radiotherapy \Ra`di*o*ther"a*py\ (r[=a]`d[i^]*[o^]*th[e^]r"[.a]*p[y^]), n. [Radio- + therapy.] (Med.) Treatment of disease by means of x-rays or radioactivity. Radiotherapy of cancer is based on the fact that cancer cells are more sensitive to radiation than most other cells in the body. [Webster 1913 Suppl. +PJC]