radio-


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radio-

or radi-
pref.
1. Radiation; radiant energy: radiometer.
2. Radioactive: radiochemistry.
3. Radio: radiotelephone.

[From radiation.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

radio-

combining form
1. (Telecommunications) denoting radio, broadcasting, or radio frequency: radiogram.
2. (General Physics) indicating radioactivity or radiation: radiochemistry; radiolucent.
3. (Nuclear Physics) indicating a radioactive isotope or substance: radioactinium; radiothorium; radioelement.
[from French, from Latin radius ray; see radius]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ra•di•o

(ˈreɪ diˌoʊ)

n., pl. -di•os, n.
1. a system of telecommunication employing electromagnetic waves of a particular frequency range to transmit speech or other sound over long distances without the use of wires.
2. an apparatus for receiving or transmitting radio broadcasts.
3. a message transmitted by radio.
adj.
4. pertaining to, used in, or sent by radio.
5. pertaining to electromagnetic radiation having frequencies in the range of approximately 10 kHz to 300,000 MHz: radio waves.
v.t.
6. to transmit (a message, music, etc.) by radio.
7. to send a message to (a person) by radio.
v.i.
8. to transmit a message, music, etc., by radio.
[1910–15; shortening of radiotelegraph or radiotelegraphy]

radio-

a combining form with the meanings “radiant energy” (radiometer), “radio waves” (radiophotograph ), “emission of rays as a result of the breakup of atomic nuclei” (radioactivity), “x-rays” (radiotherapy).
[< French, comb. form representing Latin radius beam]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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The BIRSt Radio- Bournemouth University United Kingdom got second position in the contest.

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