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radio-

 - 3 dictionary results

radio-

a combining form with the meanings “dealing with radiant energy” (radiometer), “employing or dealing with radio waves” (radioacoustics; radiolocation; radiotelephone), “emitting rays as a result of the breakup of atomic nuclei” (radioactive; radiocarbon), “characterized by, employing or dealing with such rays” (radiography; radiopaque; radiotherapy).

Origin:
< F, comb. form repr. L radius beam, ray, radius
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To radio-
radio- or radi-  
pref.  
  1. Radiation; radiant energy: radiometer.

  2. Radioactive: radiochemistry.

  3. Radio: radiotelephone.


[From radiation.]
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

radio- or radi-
pref.

  1. Radiation; radiant energy: radiometer.

  2. Radioactive: radiochemistry.

  3. Radius: radiobicipital.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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