(uncountable) In full primary radar: a method of detecting a distant object and determining its position, velocity, or other characteristics by analysing radio waves (usually microwaves) which are sent towards the object and which reflect off its surfaces; also, the field of study of this method.
They were able to find the enemy fleet using radar.
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(uncountable, by extension) Often preceded by a descriptive word: a natural (for example, in an animal such as a bat) or human-made detection method based on the analysis of reflected signals other than radio waves, as light waves or sound waves; (countable) an instance of this.
Although operational environments profoundly differ, both kinds of autonomous vehicles, groundcraft and aircraft, will still rely on conceptually the same sorts of sensors — cameras, radar and lidar — to perceive surroundings in real time.
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(countable, figurative) A superior ability to detect something; an awareness, an intuition.
His sensitive radar for hidden alliances keeps him out of trouble.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.