Meaning of “sonar” in the English Dictionary

American

"sonar" in English

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sonarnoun [ U ]

uk /ˈsəʊ.nɑːr/ us /ˈsoʊ.nɑːr/

(Definition of “sonar” from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"sonar" in American English

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sonarnoun [ U ]

us /ˈsoʊ·nɑr/

a device on a ship that uses sound to show the position of objects under the water

(Definition of “sonar” from the Cambridge Academic Content Dictionary © Cambridge University Press)