# radar

**Pronunciation:** /ˈreɪdɑːr/ · RAY-dar

**CEFR level:** B2

**Part of speech:** noun

## Meaning

A system that uses radio waves to detect objects and determine their distance, speed, and direction.

## Examples

- The pilot relied on radar to navigate through the thick fog.
- Air traffic controllers monitor the skies using radar.
- The submarine's advanced radar could detect enemy vessels from miles away.

## Synonyms

- detection — The act or process of discovering or identifying something.
- surveillance — Close observation, especially of a suspected person or area.
- locator — A device or system used to determine the position of something.

## Common patterns

- on radar — Being noticed or considered, especially by important people. — Her innovative ideas have finally put her on the radar of the CEO.
- detect by radar — To find or discover something using radar technology. — The ship was detected by radar approaching the coast.

## Collocations

- on radar — The company's new product is finally on the radar of major investors.
- detect by radar — The aircraft was detected by radar as soon as it entered the restricted airspace.
- radar screen — The operator watched the blips move across the radar screen.

Canonical URL: https://anaversity.com/dictionary/english/radar

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