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Definition of "radio-" [ra•di•o-]

  • Radiation; radiant energy: radiometer. (prefix)
  • Radioactive: radiochemistry. (prefix)
  • Radio: radiotelephone. (prefix)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "radio-" in a sentence
  • "Ionizing radiation such as the kind emitted by UV rays or X-rays breaks chemical bonds and releases ions whereas non-ionising radiation, such as radio- or microwaves, cannot break chemical bonds but can produce other effects on matter, such as heat."
  • "Crestview, a New York-based private-equity firm, created a strategic partnership with Cumulus in April to invest in radio- broadcasting companies."
  • "March 10 Bloomberg -- Cumulus Media Inc., the U.S. radio- station owner, offered to buy larger rival Citadel Broadcasting Corp. in a deal worth $2.4 billion to expand its coverage and cut costs, ending months of negotiations."