Adjacent Words

radar definitions

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WordNet (r) 3.0 (2005)

n
1: measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects [syn: radar, microwave radar, radio detection and ranging, radiolocation]

Merriam Webster's

noun Usage: often attributive Etymology: radio detecting and ranging Date: 1941 1. a device or system consisting usually of a synchronized radio transmitter and receiver that emits radio waves and processes their reflections for display and is used especially for detecting and locating objects (as aircraft) or surface features (as of a planet) 2. range of notice <fell off the radar after losing their first three games>

NOAA Weather Glossary

An instrument used to detect precipitation by measuring the strength of theelectromagnetic signal reflected back. (RADAR= Radio Detection and Ranging)

Oxford Reference Dictionary

n. 1 a system for detecting the direction, range, or presence of aircraft, ships, and other (usu. moving) objects, by sending out pulses of high frequency electromagnetic waves. 2 the apparatus used for this. Phrases and idioms: radar trap the use of radar to detect vehicles exceeding a speed limit. Etymology: radio detection and ranging

Collin's Cobuild Dictionary

(radars) Radar is a way of discovering the position or speed of objects such as aircraft or ships when they cannot be seen, by using radio signals. N-VAR: oft N n

Dictionary of Ro

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Moby Thesaurus

AA radar, AFC, AFC mixer, CRT, CW oscillator, MAD radar, Navaglobe, Oboe, TR switch, TR unit, VAR, Volscan, altimeter, amplifier, analyzer, astronavigation, automatic electronic navigation, automation, avionics, cascade screen, cathode-ray tube, celestial navigation, chronometer, coastwise navigation, consolan, dead reckoning, demodulator, detector, discriminator, early-warning radar, electron microscopy, electron optics, electron physics, electronic engineering, electronic navigation, electronics, electrophysics, fix, frequency meter, gun-directing radar, hard-tube pulser, indicator, interception radar, limiter, line of position, local oscillator, long-range radar, loran, magnetron, microwave mixer, mixer, modulator, navar, navigation, network pulser, omnidirectional range, omnirange, oscillator, overlapping, panoramic radar, photoelectricity, pilotage, plane sailing, point-to-point navigation, potentiometer, pulse generator, radar telescope, radio, radio beacon, radio navigation, radionics, range-sweep amplifier, range-sweep generator, receiver, screen, second detector, sextant, shoran, sofar, sonar, square-wave generator, synchronizer, tables, tacan, teleran, television, timing unit, tracker, transistor physics, transmitter, trigatron, visual-aural range