/ Dictionary / Index R radio wave: Meaning and Definition of Find definitions for: ra'dio wave" Pronunciation: [key] — Elect. Elect. an electromagnetic wave having a wavelength between 1 millimeter and 30,000 meters, or a frequency between 10 kilohertz and 300,000 megahertz. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. radiovision radio window Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language