ECHO SOUNDER

• (noun) 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 antisubmarine detection investigation committee"

  synonyms : asdic , sonar

WordNet® 3.0, © 2006 by Princeton University.

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