What does SONAR mean?

sonar Part of Speech: noun
Definition: a device that uses sound waves to locate objects underwater
Pronunciations: US: /ˈsoʊ.nɑr/; UK: /ˈsəʊ.nɑː/
Origin and Usage: The word sonar was first used in the early 1940s as an acronym for "SOund Navigation And Ranging." It was first used by the US Navy during World War II to detect enemy submarines. Since then, sonar has been used for a variety of purposes, including underwater mapping, fishing, and scientific research.
Synonyms: echolocation, hydroacoustics
Related Words: radar, laser
Example Sentences:
- The submarine used sonar to locate the wreckage of the sunken ship.
- Scientists used sonar to map the ocean floor.
- The fishing boat used sonar to locate schools of fish.