radiotherapy

[rey-dee-oh-ther-uh-pee]
noun Medicine/Medical.
treatment of disease by means of x-rays or of radioactive substances.
Also called radiation therapy.


Origin:
1900–05; radio- + therapy

radiotherapist, noun
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World English Dictionary
radiotherapy (ˌreɪdɪəʊˈθɛrəpɪ)
 
n
Compare chemotherapy 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
 
radiotherapeutic
 
adj
 
radiothera'peutically
 
adv
 
radio'therapist
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

radiotherapy ra·di·o·ther·a·py (rā'dē-ō-thěr'ə-pē)
n.
Treatment of disease with radiation, especially by selective irradiation with x-rays or other ionizing radiation and by ingestion of radioisotopes.


ra'di·o·ther'a·pist n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
The three main treatment options are surgery, radiotherapy and chemotherapy.
Security fears spawn ways to treat radiotherapy's downside.
Nine days of chemotherapy followed by seven weeks of radiotherapy reduced me to
  skeleton.
Surgery, radiotherapy and chemotherapy treatments advance constantly.
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