foghorn

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foghorn

a mechanical instrument sounded at intervals to serve as a warning to vessels in fog
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Foghorn

 

an electroacoustic device of the diaphragm type installed in lighthouses and shore beacons; used to produce a shrill, high-pitched signal that can be heard on board a ship during periods of fog or reduced visibility. The signal of a foghorn is audible at distances up to 15 nautical miles.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.

foghorn

[′fäg‚hȯrn]
(navigation)
A horn used as a fog signal.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
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45 Which 1950s Ray Harryhausenanimated monster movie is based on Ray Bradbury short story The Fog Horn?
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