English Lexicon

Radar dish

/ˈreɪ.dɑːr dɪʃ/
nounCEFR B2 (Upper)Top #14500 frequency
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Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    A concave, parabolic antenna used to transmit and receive radio waves for detecting the position, speed, and other characteristics of remote objects.

    "The massive radar dish slowly rotated on the top of the weather station, scanning the horizon for approaching storms."
  2. 2

    A satellite dish or similar directional reflector used in telecommunications and astronomy.

    "Astronomers used the large radar dish to bounce signals off near-Earth asteroids for mapping purposes."

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Linguistic Origin & Historical Etymology

The term combines 'radar', an acronym coined in 1940 for 'radio detection and ranging' from British developments based on earlier wireless pulsing techniques, with 'dish', derived from Old English 'disc' and Latin 'discus', describing the concave, plate-like physical shape utilized to focus radio waves.

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