sonar
//ˈsoʊ.nɑːr//
Noun
sonarSingular
sonarsPlural
1
A system that uses sound waves to detect and locate objects underwater, especially submarines or other vessels.
The submarine used sonar to detect enemy ships in the area.
2
The equipment or apparatus used to transmit and receive sound waves for underwater detection.
The submarine's sonar detected an object on the ocean floor.