Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio.
a navigational system for aircraft in which a network of ground stations send out VHF radio signals that control a display on the instrument panel of an aircraft, showing the pilot the heading of the plane in relation to the source of a specific signal
Origin: from omni(directional radio) range
Used by arrangement with John Wiley & Sons, Inc.
The American Heritage® Dictionary of the English Language, 4th edition Copyright © 2010 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
A radio network that provides aircraft with complete information on bearings. Also called omnidirectional radio range.