radio waven. An electromagnetic wave within the range of radio frequencies. |
radio wave A very low frequency electromagnetic wave (from roughly 30 kilohertz to 100 gigahertz). Radio waves are used for the transmission of radio and television signals; the microwaves used in radar and microwave ovens are also radio waves. Many celestial objects, such as pulsars, emit radio waves. See more at electromagnetic spectrum. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | radio wave - an electromagnetic wave with a wavelength between 0.5 cm to 30,000 msky wave - a radio wave that is reflected back to earth by the ionosphere or a communications satellite; permits transmission around the curve of the earth's surface ground wave - a radio wave propagated on or near the earth's surface radio signal - a radio wave used to transmit and receive messages short wave - a radio wave with a wavelength less than 100 meters (a frequency greater than 3 megahertz) medium wave - a radio wave with a wavelength between 100 and 1000 meters (a frequency between 300 kilohertz and 3000 kilohertz) long wave - a radio wave with a wavelength longer than a kilometer (a frequency below 300 kilohertz) |