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Definition of radar

radar

/ˈreɪdɑːr/
ra · dar
Plural:radars
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radar Lexical Profile

radar Game Scores & Validity

• noun

1

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 back to the source.

Example

"The air traffic controller monitored the radar to safely guide the approaching flights through the dense fog."

2

The screen or display on which radar signals are visually represented.

Example

"A large, unidentified blip suddenly appeared on the submarine's radar."

3

A person's range of awareness, attention, or consideration.

Example

"The new tech startup was completely off our radar until they launched their massive, disruptive marketing campaign."

Synonyms
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Antonyms
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• Rhymes for radar

• Nearby Words

racquetball
racy
rad
radar
radde viper
radial
radially

Word Origin & Etymology

Coined in 1940 by the United States Navy as an acronym for 'RAdio Detection And Ranging'.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Radar. In Wordmom Dictionary. Retrieved Nov 15, 2026, from https://wordmom.com/dictionary/radar
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