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Sonar is a way of communicating, navigating, and detecting objects by using sound propagation. For the remainder of this lesson, we will focus on underwater sonar, which is used by submarines and some aquatic animals to perform the previously mentioned tasks.
: a device for detecting objects underwater using reflected sound waves. See words that rhyme with sonar Spanish Central: Translation of sonar Nglish: Translation of sonar for Spanish speakers Britannica.com: Encyclopedia article about sonar.