/ˈreɪ.dɑː/

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Line drawing of radar
Coloured illustration of radar
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Meaning

A system that uses radio waves to find planes, ships, or rain that are far away.

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Word origin

Made in the 1940s from the first letters of radio detection and ranging.

Origin
English
Root
radio detection and ranging
English cognates
radio

Examples

.

Radar shows far-away objects as points on a screen.

.

Radar works even when you cannot see.

.

A radar gun measures how fast a car is going.

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English · Free printables

radar: worksheet, infographic and listicle

Free printable study downloads for the English word "radar" (A system that uses radio waves to find planes, ships, or rain that are far away.): a worksheet with the answer key built in, an infographic, and a sentence listicle. Open any one to view, print or save.

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This word is taught in chapter 32, lesson 4: radar, prosecutor, amber and 7 more words.