soʊˈnɑr

Definitions

1. noun

A system consisting of a device such as a sonar set on a ship or submarine that sends out sound waves and detects their echoes to locate and track objects underwater.

“The sonar system helped the submarine navigate through the dark ocean.”

2. verb

To use or operate a sonar system.

“The crew sonared the area to check for any underwater mines.”

3. noun

A device that uses sound waves to navigate or locate objects.

“The pilot used the sonar to find his way through the dense fog.”