sonar
/ˈsoʊnɑr/
noun
- A system that uses sound waves to detect and locate objects underwater, such as submarines, ships, or fish.
- The submarine used sonar to navigate through the dark ocean.
- The research vessel's sonar mapped the ocean floor in detail.
- Fishermen rely on sonar to find schools of fish beneath the surface.
- The equipment or device that produces and receives sound waves for underwater detection.
- The ship's sonar picked up a large object moving slowly ahead.
- The sonar beeped steadily as it scanned the water.
- He installed a new sonar on his boat to help with fishing.