radio wave

noun

Electricity.

1. an electromagnetic wave having a wavelength between 1 millimeter and 30,000 meters, or a frequency between 10 kilohertz and 300,000 megahertz.

radio wave

noun

1. an electromagnetic wave of radio frequency

radio wave

1. 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.

2. See more at electromagnetic spectrum

Word History and Origins

Origin of radio wave¹

First recorded in 1915–20

Related Words

• microwave