radar

• POS: Noun
• HYPHEN: ra=dar

OXFORD DICTIONARY

radar, 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.

Idiom

radar trap the use of radar to detect vehicles exceeding a speed limit.

Etymology

radio detection and ranging

THESAURUS

radar

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

ROGET THESAURUS

radar

Warning

N warning, early warning, caution, caveat, notice, premonition, premonishment, prediction, contraindication, lesson, dehortation, admonition, monition, alarm, handwriting on the wall, mene mene tekel upharsin, red flag, yellow flag, fog-signal, foghorn, siren, monitor, warning voice, Cassandra, signs of the times, Mother Cary's chickens, stormy petrel, bird of ill omen, gathering clouds, clouds in the horizon, death watch, watchtower, beacon, signal post, lighthouse, sentinel, sentry, watch, watchman, watch and ward, watchdog, bandog, housedog, patrol, patrolman, vedette, picket, bivouac, scout, spy, spial, undercover agent, mole, plainclothesman, advanced guard, rear guard, lookout, cautiousness, monitor, guard camera, radar, AWACS, spy satellite, spy-in-the- sky, U2 plane, spy plane, warning, premonitory, monitory, cautionary, admonitory, admonitive, sematic, warned, forewarned, on one's guard, in terrorem, Int, beware!, ware!, take care!, look out!, fore (golf), mind what you are about!, take care what you are about!, mind!, ne reveillez pas le chat qui dort, don't wake a sleeping cat, foenum habet in cornu, caveat actor, le silence du people est la legon des rois, verbum sat sapienti, a word to the wise is sufficient, un averti en vaut deux.