ASDICS

asdic

[az-dik]
noun British.

Origin:
1935–40; A(nti-)S(ubmarine) D(etection) I(nvestigation) C(ommittee)

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asdic (ˈæzdɪk)
 
n
an early form of sonar
 
[C20: from A(nti-)S(ubmarine) D(etection) I(nvestigation) C(ommittee)]

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