Definitions for radar
ˈreɪ dɑrradar

Princeton's WordNet(1.00 / 1 vote)Rate this definition:

1. radar, microwave radar, radio detection and ranging, radiolocation(noun)

   measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects

GCIDE(0.00 / 0 votes)Rate this definition:

1. radar(n.)

   The method of detecting objects, finding their distance, or determining their speed, by use of a radar device; as, modern radar can detect objects as small as raindrops.

   Etymology: [acronym from RAdio Detection And Ranging.]

Wiktionary(2.50 / 2 votes)Rate this definition:

1. radar(Noun)

   A method of detecting distant objects and determining their position, velocity, or other characteristics by analysis of sent radio waves (usually microwaves) reflected from their surfaces

   Etymology: Originally spelled RADAR; an acronym of .

2. radar(Noun)

   A type of system using such method, differentiated by platform, configuration, frequency, power, and other technical attributes.

   Etymology: Originally spelled RADAR; an acronym of .

3. radar(Noun)

   An installation of such a system or of the transmitting and receiving apparatus.

   Etymology: Originally spelled RADAR; an acronym of .

4. radar(Noun)

   A superior ability to detect something.

   His sensitive radar for hidden alliances keeps him out of trouble.

   Etymology: Originally spelled RADAR; an acronym of .

5. radar(Verb)

   To scan with radar, or as if with radar.

   Etymology: Originally spelled RADAR; an acronym of .

Freebase(4.50 / 2 votes)Rate this definition:

1. Radar

   Radar is an object detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. The radar dish or antenna transmits pulses of radio waves or microwaves which bounce off any object in their path. The object returns a tiny part of the wave's energy to a dish or antenna which is usually located at the same site as the transmitter. Radar was secretly developed by several nations before and during World War II. The term RADAR was coined in 1940 by the United States Navy as an acronym for RAdio Detection And Ranging. The term radar has since entered English and other languages as the common noun radar, losing all capitalization. The modern uses of radar are highly diverse, including air traffic control, radar astronomy, air-defense systems, antimissile systems; marine radars to locate landmarks and other ships; aircraft anticollision systems; ocean surveillance systems, outer space surveillance and rendezvous systems; meteorological precipitation monitoring; altimetry and flight control systems; guided missile target locating systems; and ground-penetrating radar for geological observations. High tech radar systems are associated with digital signal processing and are capable of extracting useful information from very high noise levels.

U.S. National Library of Medicine(0.00 / 0 votes)Rate this definition:

1. Radar

   A system using beamed and reflected radio signals to and from an object in such a way that range, bearing, and other characteristics of the object may be determined.

Suggested Resources(0.00 / 0 votes)Rate this definition:

1. radar

   Song lyrics by radar -- Explore a large variety of song lyrics performed by radar on the Lyrics.com website.

How to pronounce radar?

1. 

   Alex

   US English

   

   Daniel

   British

   

   Karen

   Australian

   

   Veena

   Indian

How to say radar in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of radar in Chaldean Numerology is: 1

2. Pythagorean Numerology

   The numerical value of radar in Pythagorean Numerology is: 6

Examples of radar in a Sentence

1. Flaviane Venditti:

   The radar measurements allow us to know more precisely where the asteroid will be in the future, including its future close approaches to Earth, in 2079, asteroid 1998 OR2 will pass Earth about 3.5 times closer than it will this year, so it is important to know its orbit precisely.

2. Tom Wind:

   August housing starts disappointed, but this is a mere blip on the radar. The housing market’s underlying fundamentals remain on pace for continued recovery.

3. Qi Yifeng:

   Yuan devaluation suddenly became a concern for stock investors earlier this week, but now this issue is fading out of their radar.

4. Veryan Khan:

   The fear of returning foreign fighters from Syria and Iraq is high, butMauritania-trained fighters are not even on anyone's radar.

5. David Mann:

   It's very, very important that we clarify that that radar, that system is not looking at China, if the decision is made to deploy it, that system would be oriented on North Korea and threats posed by the North Korean military.

Images & Illustrations of radar

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