radar

[ rey-dahr ]

/ ˈreɪ dɑr /

SEE SYNONYMS FOR radar ON THESAURUS.COM

noun

Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns.

a means or sense of awareness or perception: lobbyists working under the media's radar.

Origin of radar

1940–45, Americanism;ra(dio)d(etecting)a(nd)r(anging)

OTHER WORDS FROM radar

an·ti·ra·dar, noun, adjective

Words nearby radar

racquet, racquetball, racy, rad, RADA, radar, radar astronomy, radar beacon, radar gun, radarkymography, radarman

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for radar

There should be a retrievable record of exactly when the Airbus disappeared from radar.
Did Bad Weather Bring Down AirAsia 8501?|Clive Irving|December 29, 2014|DAILY BEAST
“He went to the top of my radar screen,” Tancredo told The Daily Beast.
The ‘Stop Chris Christie’ Movement Begins. Good Luck With That.|Olivia Nuzzi|November 8, 2014|DAILY BEAST
The radar stations would be used to guide interceptors to their targets while the training range would be used to train pilots.
Russia Preps Its North Pole Invasion|Dave Majumdar|November 8, 2014|DAILY BEAST
Press releases show it briefly advocated against a prevailing wage for education projects in 2009 before falling off the radar.
Mystery Man Buys Kentucky for the GOP|Center for Public Integrity|October 29, 2014|DAILY BEAST

A tropical storm, clearly visible on radar for days, is to blame.
Nepal’s Deadliest Avalanche Was Totally Avoidable|Dick Dorworth|October 20, 2014|DAILY BEAST
"Radar bridge here," Roger's voice chimed in softly on the speaker.
Stand by for Mars!|Carey Rockwell
Rubbing his knuckles and feeling better than he had felt for days, he started back to the radar bridge.
Danger in Deep Space|Carey Rockwell
The speakers about the radar room murmured the orders given through all the ship.
The Aliens|Murray Leinster
I got a thousand just for picking up that ship on the radar.
On the Trail of the Space Pirates|Carey Rockwell
Roger's voice blasted through the intercom from the radar deck.
The Space Pioneers|Carey Rockwell

British Dictionary definitions for radar

radar

/ (ˈreɪdɑː) /

noun

a method for detecting the position and velocity of a distant object, such as an aircraft A narrow beam of extremely high-frequency radio pulses is transmitted and reflected by the object back to the transmitter, the signal being displayed on a radarscope. The direction of the reflected beam and the time between transmission and reception of a pulse determine the position of the objectFormer name: radiolocation

the equipment used in such detection

Word Origin for radar

C20 ra (dio) d (etecting) a (nd) r (anging)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Cultural definitions for radar

radar

A method of finding the position and velocity of an object by bouncing a radio wave off it and analyzing the reflected wave. Radar is an acronym for radio detection and ranging.

notes for radar

Police use radar techniques to determine the speed of automobiles.

Scientific definitions for radar

radar

[ rā′där ]

A method of detecting distant objects and determining their position, speed, material composition, or other characteristics by causing radio waves to be reflected from them and analyzing the reflected waves. The waves can be converted into images, as for use on weather maps.

The equipment used in such detecting. See also Doppler effect lidar sonar.

单词	radar
释义	radar [ rey-dahr ] / ˈreɪ dɑr / SEE SYNONYMS FOR radar ON THESAURUS.COM noun Electronics. a device for determining the presence and location of an object by measuring the time for the echo of a radio wave to return from it and the direction from which it returns. a means or sense of awareness or perception: lobbyists working under the media's radar. Origin of radar 1940–45, Americanism;ra(dio)d(etecting)a(nd)r(anging) OTHER WORDS FROM radar an·ti·ra·dar, noun, adjective Words nearby radar racquet, racquetball, racy, rad, RADA, radar, radar astronomy, radar beacon, radar gun, radarkymography, radarman Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for radar There should be a retrievable record of exactly when the Airbus disappeared from radar. Did Bad Weather Bring Down AirAsia 8501?\|Clive Irving\|December 29, 2014\|DAILY BEAST “He went to the top of my radar screen,” Tancredo told The Daily Beast. The ‘Stop Chris Christie’ Movement Begins. Good Luck With That.\|Olivia Nuzzi\|November 8, 2014\|DAILY BEAST The radar stations would be used to guide interceptors to their targets while the training range would be used to train pilots. Russia Preps Its North Pole Invasion\|Dave Majumdar\|November 8, 2014\|DAILY BEAST Press releases show it briefly advocated against a prevailing wage for education projects in 2009 before falling off the radar. Mystery Man Buys Kentucky for the GOP\|Center for Public Integrity\|October 29, 2014\|DAILY BEAST A tropical storm, clearly visible on radar for days, is to blame. Nepal’s Deadliest Avalanche Was Totally Avoidable\|Dick Dorworth\|October 20, 2014\|DAILY BEAST "Radar bridge here," Roger's voice chimed in softly on the speaker. Stand by for Mars!\|Carey Rockwell Rubbing his knuckles and feeling better than he had felt for days, he started back to the radar bridge. Danger in Deep Space\|Carey Rockwell The speakers about the radar room murmured the orders given through all the ship. The Aliens\|Murray Leinster I got a thousand just for picking up that ship on the radar. On the Trail of the Space Pirates\|Carey Rockwell Roger's voice blasted through the intercom from the radar deck. The Space Pioneers\|Carey Rockwell British Dictionary definitions for radar radar / (ˈreɪdɑː) / noun a method for detecting the position and velocity of a distant object, such as an aircraft A narrow beam of extremely high-frequency radio pulses is transmitted and reflected by the object back to the transmitter, the signal being displayed on a radarscope. The direction of the reflected beam and the time between transmission and reception of a pulse determine the position of the objectFormer name: radiolocation the equipment used in such detection Word Origin for radar C20 ra (dio) d (etecting) a (nd) r (anging) Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to radar sonar, direction finding, tracking system Cultural definitions for radar radar A method of finding the position and velocity of an object by bouncing a radio wave off it and analyzing the reflected wave. Radar is an acronym for radio detection and ranging. notes for radar Police use radar techniques to determine the speed of automobiles. The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. Scientific definitions for radar radar [ rā′där ] A method of detecting distant objects and determining their position, speed, material composition, or other characteristics by causing radio waves to be reflected from them and analyzing the reflected waves. The waves can be converted into images, as for use on weather maps. The equipment used in such detecting. See also Doppler effect lidar sonar. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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radar

noun

Origin of radar

OTHER WORDS FROM radar

Words nearby radar

Example sentences from the Web for radar

British Dictionary definitions for radar

noun

Word Origin for radar

Words related to radar

Cultural definitions for radar

notes for radar

Scientific definitions for radar