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The Clue
Sonar, in England (5 letter answer)
The Answer
ASDIC
Tags
Notes
The answer ASDIC is so rare that it appears less than once every 2500 puzzles.
Related Clues
British sub-detection apparatus
Definition
ASDIC as a noun:
1. (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"