radar Definition

a system for detecting the presence, direction, distance, and speed of aircraft, ships, and other objects, by sending out pulses of high-frequency electromagnetic waves that are reflected off the object back to the source..

Using radar: Examples

Take a moment to familiarize yourself with how "radar" can be used in various situations through the following examples!

  • Example

    The radar detected an incoming missile.

  • Example

    The ship's radar was damaged in the storm.

  • Example

    Air traffic control uses radar to track planes.

  • Example

    The police used radar to catch speeding drivers.

radar Synonyms and Antonyms

Synonyms for radar

Phrases with radar

  • ground-penetrating radar

    a geophysical method that uses radar pulses to image the subsurface


    The archaeologists used ground-penetrating radar to locate buried artifacts.

  • a device used by law enforcement to measure the speed of moving vehicles


    The police officer pointed the radar gun at the car to determine its speed.

  • a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail, etc.)


    The weather radar showed a storm approaching the city.

Origins of radar

acronym from 'radio detection and ranging'


Summary: radar in Brief

'Radar' [ˈreɪdɑː(r)] is a system that detects the presence, direction, distance, and speed of objects by sending out high-frequency electromagnetic waves. It is commonly used in air traffic control, military defense, and law enforcement. Phrases like 'ground-penetrating radar' and 'weather radar' denote specific applications of the technology.

How do native speakers use this expression?