Definition of radar Radar

/ɹejˈdɑˌɹ/ - [reydar] - ra•dar

We found 9 definitions of radar from 5 different sources.

What does radar mean?

Noun Plural: radars
radar - measuring instrument in which the echo of a pulse of microwave radiation is used to detect and locate distant objects
		microwave radar, radio detection and ranging, radiolocation
		measuring device, measuring instrument, measuring system instrument that shows the extent or amount or quantity or degree of something
		dish aerial, dish antenna, saucer, dish a small shallow dish for holding a cup at the table
		doppler radar radar that uses the Doppler shift to measure velocity
		early warning radar a radar that is part of an early warning system
		cathode-ray oscilloscope, cro, oscilloscope, scope electronic equipment that provides visual images of varying electrical quantities
		pulse generator a generator of single or multiple voltage pulses; usually adjustable for pulse rate
		3d radar, three-dimensional radar radar that will report altitude as well as azimuth and distance of a target
		wave guide, waveguide a hollow metal conductor that provides a path to guide microwaves; used in radar

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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.
radar (Noun)
A type of system using such method, differentiated by platform, configuration, frequency, power, and other technical attributes.
radar (Noun)
An installation of such a system or of the transmitting and receiving apparatus.
radar (Noun)
A superior ability to detect something.
radar (Verb)
To scan with radar, or as if with radar.

radar
A system using beamed and reflected radiofrequency energy for detecting and locating objects, measuring distance or altitude, navigating, homing, bombing and other purposes.

Radar is a machine that uses radio waves to find other objects such as aircraft, ships, and rain.

A thing called a transmitter sends out radio waves, which are bounced back by the object that the radar is trying to find. By doing this, the radar can find what place the object is at. Radar is used in a lot of different ways, such as finding speeding cars, the amount of water in the air, traffic, ect.

Radar was first used in 1904 by Christian Hülsmeyer. He was given a patent for radar (Reichspatent Nr. 165546).

The word "RADAR" was created in 1941 as an acronym (words with letters that each have its own meaning) for Radio Detection and Ranging. This acronym replaced the British acronym "RDF" ("Radio Direction Finding"). The word is now thought by many people as a regular word, no longer as an acronym.

According to FAA(Federal Aviation Administration), there are

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radar in sign language