sonar

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noun so·nar \ˈsō-ˌnär\

Definition of sonar

  1. :  a method or device for detecting and locating objects especially underwater by means of sound waves sent out to be reflected by the objects; also :  a device for detecting the presence of a vessel (as a submarine) by the sound it emits in water

Examples of sonar in a sentence

  1. They detected the submarine by using sonar.

Origin and Etymology of sonar

sound navigation ranging


First Known Use: 1945


SONAR Defined for English Language Learners

sonar

play
noun so·nar \ˈsō-ˌnär\

Definition of sonar for English Language Learners

  • : a device used for finding things that are underwater by using sound waves


SONAR Defined for Kids

sonar

play
noun so·nar \ˈsō-ˌnär\

Definition of sonar for Students

  1. :  a device for detecting objects underwater using reflected sound waves


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