SONAR


Meaning of SONAR in English

so ‧ nar /ˈsəʊnɑː, -nə $ ˈsoʊnɑːr, -nər/ BrE AmE noun [uncountable]

[ Date: 1900-2000 ; Origin: sound navigation ranging ]

equipment on a ship or ↑ submarine that uses ↑ sound wave s to find out the position of objects under the water

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.