A small portable radio.
- The definition of radio is relating to a device that uses electromagnetic waves for communication.
An example of radio used as an adjective is in the phrase "radio station," which means a particular station that broadcasts news and or music.
- Radio is communication over distance when sounds are converted to electromagnetic waves and sent to a receiver that transfers the waves back to sounds.
An example of radio is how people listen to music in their cars on their way to work.
- Radio means to communicate over a device that uses electromagnetic waves.
An example of radio is to broadcast an important community announcement over the local music station.
- the practice or science of communicating over a distance by converting sounds or signals into electromagnetic waves and transmitting these directly through space, without connecting wires, to a receiving set, which changes them back into sounds, signals, etc.
- pl. -·os· such a receiving set, esp. one adapted for receiving the waves of the assigned frequencies of certain transmitters or broadcasting stations
- broadcasting by radio as an industry, entertainment, art, etc.
- all the facilities and related activities of such broadcasting
Origin of radiocontr. ; from radiotelegraphy
- of, using, used in, sent by, or operated by radio
- having to do with electromagnetic wave frequencies between c. 10 kilohertz and c. 300,000 megahertz
- ray, raylike
- by radio: radiotelegraph
- by means of radiant energy: radiothermy
- radioactive: radiotherapy
Origin of radio-French ; from Classical Latin radius, ray: see radius
- Electromagnetic radiation with lower frequencies and longer wavelengths than those of microwaves, having frequencies lower than 300 megahertz and wavelengths longer than 1 meter.
- a. The transmission and reception of electromagnetic waves within this range, especially when convertible to audible sounds: the use of radio in warfare.b. A device, such as a walkie-talkie, that transmits or receives such signals.
- a. The system or industry that broadcasts programs of audio content to the public or subscribers by means of radio waves: She was famous during the early days of radio.b. Audio content, especially short programs or sets of songs, created for or distributed through such a system: listening to radio.c. An electronic device for listening to radio programming, consisting of a tuner and speakers.
verbra·di·oed, ra·di·o·ing, ra·di·os
- To transmit by radio: radio a message to headquarters.
- To transmit a message to by radio: radioed the spacecraft.
Origin of radioShort for radiotelegraphy.
- Radiation; radiant energy: radiometer.
- Radioactive: radiochemistry.
- Radio: radiotelephone.
Origin of radio-From radiation.
See also media.phototelegraphy the transmission of pictures, print, etc., by means of radio or telegraphy. —phototelegraphic, adj. radiophony radiotelephony. —radiophonic, adj. radiotechnology the science and technology of radio engineering. —radiotechnologic, radiotechnological, adj. See also radiation. radiotelegraphy 1. the transmitting and receiving of messages by radiotelegraph. 2. the science and technology of the radiotelegraph. —radiotelegraphic, adj. radiotelephony verbal communication at a distance by radio, using telephones. Also called radiophony. —radiotelephonic, adj. telemechanics the science of operating or controlling mechanisms by remote control, especially by radio.
(countable and uncountable, plural radios)
- (uncountable) The technology that allows for the transmission of sound or other signals by modulation of electromagnetic waves.
- (countable) A device that can capture (receive) the signal sent over radio waves and render the modulated signal as sound.
- (countable) A device that can transmit radio signals.
- (Internet, uncountable) The continuous broadcasting of sound recordings via the Internet in the style of traditional radio.
(third-person singular simple present radios, present participle radioing, simple past and past participle radioed)
- (intransitive, , intransitive) To use two-way radio to transmit (a message) (to another radio or other radio operat).
- I think the boat is sinking; we'd better radio for help. / I radioed him already. / Radio the coordinates this time. / OK. I radioed them the coordinates.
- To order or assist (to a location), using telecommunications.
radio - Computer Definition
Electromagnetic energy with a waveform having a frequency above the upper limit of the audio range of 3 kHz and equal or less than the lower limit of the infrared light range of 300 GHz.At the low end of the range is extremely low frequency (ELF) radio, which operates at 30
(1) A device that either receives, transmits or transmits and receives wireless signals (electromagnetic waves). The term may refer to a stand-alone unit or only to the circuits that handle the transmission. The phrase "the device has four radios" means the unit has some combination of receivers and transceivers, which may reside on one or more chips. For example, a modern smartphone can have four radios; one each for 3G, Wi-Fi, Bluetooth and GPS. See transceiver.
(2) The transmission of wireless signals (electromagnetic waves) through the air or through a hollow tube called a "waveguide." Although radio is often thought of as only AM and FM radio or sometimes two-way radio, all transmission systems that propagate signals over the air are "radio," including TV, satellite, portable phones, cellphones and wireless LANs. See spectrum.