noun as·dic \ˈaz-(ˌ)dik\

Definition of ASDIC

chiefly British
:  sonar

Origin of ASDIC

from asdics underwater echo ranging, probably from Anti-Submarine Division (British Admiralty department 1916–18) + -ics
First Known Use: 1939


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July 04, 2015
stringent Hear it
rigorous, strict, or severe
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