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.
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- an·ti·ra·dar, noun, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use radar in a sentence
Also, Google rolling out dark themes in search is something that should not surprise anyone but should be on the radars of search marketers.Google Search dark theme mode expands but search ads are hard to distinguish | Barry Schwartz | February 11, 2021 | Search Engine Land
You just … Some of the opportunities I’ve had, I didn’t even know I was on anybody’s radar.The Educator Fighting to Rectify the Achievement Gap | Esabelle Lee | February 6, 2021 | Ozy
A stealth aircraft, it can’t be seen by radar, but your eyes will definitely be able to spot it.This year’s Super Bowl flyover will be unlike any other | Rob Verger | February 5, 2021 | Popular-Science
In an interview, Davis said the bill was not on his radar until the teenagers contacted him.Virginia set to pass historic bill giving students time off to protest — because teen Republicans and Dems teamed up to demand it | Hannah Natanson | February 2, 2021 | Washington Post
She also says Victorian wallpapers and William Morris prints will enjoy a revival, and Victorian and neoclassical styles, which have been under the radar, will be popping up in homes.The hottest decorating trends for 2021 aren’t trendy at all — and that’s the point | Elizabeth Mayhew | February 2, 2021 | Washington Post
There should be a retrievable record of exactly when the Airbus disappeared from radar.
The flight path remained close to the Indonesian archipelago, well within what is the normal reach of air traffic control radar.
“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 | THE DAILY BEAST
The radar stations would be used to guide interceptors to their targets while the training range would be used to train pilots.
“They are furious with Pippa,” an aristocratic source told radar Online at the time.
I was hanging on to him trying to see around and over and even under the Zloomph—steering by a sort of radar-like sixth sense.The Holes and John Smith | Edward W. Ludwig
It loomed against the cold glory of stars like a pit of ultimate darkness, and Jessup had to guide the boat in with radar.Security | Poul William Anderson
Then there were some tiny radar-blips, which could have indicated meteors.The Planet Strappers | Raymond Zinke Gallun
I cut out the radar and cut in the nose orthicon and sat back to watch the beacon appear on the screen.The Repairman | Harry Harrison
When Thomas told me the nature of the damage to our radar and communications systems, that was another hint.Greylorn | John Keith Laumer
British Dictionary definitions for radar
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 object: Former name: radiolocation
the equipment used in such detection
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
Scientific definitions for radar
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.
Cultural definitions for radar
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.