/ Dictionary / Index R radiofrequency: Meaning and Definition of Find definitions for: ra•di•o•fre•quen•cy Pronunciation: (rā"dē-ō-frē'kwun-sē), [key] — pl. -cies. the frequency of the transmitting waves of a given radio message or broadcast. a frequency within the range of radio transmission, from about 15,000 to 10 hertz. Abbr.: RF, rf&hasp; Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Radio Free Europe/Radio Liberty radio galaxy Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language