WordNet: asdic, echo sounder, sonar

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"

• hypernym measuring device, measuring instrument, measuring system

• hypernym navigational instrument

• part holonym U-boat, pigboat, sub, submarine

asdic

• (suomi) asdic (synonyymi)

echo sounder

• (suomi) kaikuluotain (synonyymi)

sonar

• (suomi) sonar (synonyymi)

• (suomi) kaikuluotain (synonyymi)