echo sounder, 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
<noun.artifact> freq. cnt.: 6 freq. cnt.: 6
asdic echo sounder sonar
sample sentences
"sonar is an acronym for sound navigation ranging""asdic is an acronym for antisubmarine detection investigation committee"
semantic pointers
hypernym
part meronym
part holonym