early warning system

early-warning system

[ur-lee wawr-ning]
noun
1.
Military. a network of radar installations designed to detect enemy aircraft or missiles in time for the effective deployment of defense systems.
2.
any series of steps established to spot potential problems.

Origin:
1945–50

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
early warning system
 
n
1.  a network of radar and communications units intended to detect at the earliest possible moment an attack by enemy aircraft or missiles
2.  anything that gives advance notice of something

Collins English Dictionary - Complete & Unabridged 10th Edition
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