sonar
1.
(
noun
) an 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 SOund NAvigation Ranging; asdic is Anti-Submarine Detection Investigation Committee)
Synonyms:
asdic
,
echo sounder
Related Words:
measuring instrument
,
measuring system
,
navigational instrument
Terms and Conditions of Use / Copyright Notice