Search Result：echo sounder
echo sounder 
(TTS Sound)
(TTS Sound)Overview of noun echo_sounder
The noun echo sounder has 1 sense
- sonar, echo sounder, asdic -- (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")