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from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. 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


Sorry, no etymologies found.


  • Establishment (ASEE), where he was involved with the development of asdic, an early form of sonar, and then for the Admiralty Signals Establishment (ASE).

    The Guardian World News

  • I mean I'm also thinking of Japanese and I guess, Idaho and so on from a manual differentiation there, but in so called normal times, if they exist, is there a flow of chassis for asdic or is it fairly steady? The Ad-Free Personal Finance Blogs Aggregator


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  • I believe this is the old British name for sonar, which became obsolete after World War II.

    February 17, 2008