Definition of Sofar in English:

Sofar

(also SOFAR)

noun

  • [mass noun] A system in which the sound waves from an underwater explosion are detected and located by three or more listening stations, useful in determining the position at sea of survivors of a disaster.

    • ‘Ewing and Worzel demonstrated that the SOFAR channel was capable of transmitting the low-frequency, long-wavelength sound waves produced by an explosion near the Bahama Islands to receivers stationed near the coast of Africa.’
    • ‘Listening in the SOFAR channel, scientists or naval personnel can record sounds whose source is thousands of kilometers away.’
    • ‘In the SOFAR channel, low frequency waves may travel thousands of miles before weakening.’

Origin

1940s: from So(und) f(ixing) a(nd) r(anging).

Pronunciation:

Sofar

/ˈsəʊfɑː/