from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A network of sensing devices, such as satellites or radar, for detecting an enemy attack in time to take defensive or counteroffensive measures.
- n. A system or procedure designed to warn of a potential or an impending problem.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a network of radar installations designed to detect enemy missiles or aircraft while there is still time to intercept them
Sorry, no etymologies found.