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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 so·nar /ˈsoˌnɑr/
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From: Network Terminology

 sonar
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From: WordNet (r) 2.0

 sonar
      n : a measuring instrument that sends out an acoustic pulse in
          water and measures distances in terms of the time for the
          echo of the pulse to return; sonar is an acronym for
          sound navigation ranging; asdic is an acronym for
          anti-submarine detection investigation committee [syn: echo
           sounder, asdic]