Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A system for determining the position of survivors lost at sea by which an explosion is set off underwater, the time needed for the waves to reach three different locations is calculated, and the position of the explosion is ascertained by triangulation.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A system for determining the position of survivors lost at sea.

Etymologies

so(und) f(ixing) a(nd) r(anging).
(American Heritage® Dictionary of the English Language, Fourth Edition)

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