asdic

Noun

WORDNET DICTIONARY

asdic(n = noun.artifact) 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"

is a kind of measuring device, measuring instrument, measuring system, navigational instrument

has parts: pinger, pulse generator

is a part of pigboat, sub, submarine, u-boat

asdic, n. an early form of echo-sounder.

Etymology

initials of Allied Submarine Detection Investigation Committee

For further exploring for "asdic" in Webster Dictionary Online