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loran

[lawr-an, lohr-] /ˈlɔr æn, ˈloʊr-/
noun
1.
a system of long-range navigation whereby the latitude and longitude of a ship or airplane are determined from the time displacement between radio signals from two or more fixed transmitters.
Also, Loran.
Origin
1940-1945
1940-45, Americanism; lo(ng) ra(nge) n(avigation)
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for loran

loran

/ˈlɔːrən/
noun
1.
a radio navigation system operating over long distances. Synchronized pulses are transmitted from widely spaced radio stations to aircraft or shipping, the time of arrival of the pulses being used to determine position
Word Origin
C20: lo(ng-)ra(nge) n(avigation)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for loran
n.

1940, a word invented from initial letters in long-range navigation.

Online Etymology Dictionary, © 2010 Douglas Harper
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loran in Science
loran
  (lôr'ān')   
A long-range navigational system, in which a receiver's position is determined by an analysis involving the time intervals between pulsed radio signals from two or more pairs of ground stations of known position. The difference in the timing of the received signals corresponds to differences in distance from the transmitters, and the position of the receiver can be calculated by triangulation. Compare Global Positioning System.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Related Abbreviations for loran

loran

long range radio aid to navigation
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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