Military. a network of radar installations designed to detect enemy aircraft or missiles in time for the effective deployment of defense systems.
any series of steps established to spot potential problems.
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Origin of early-warning system
First recorded in 1945–50
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
early warning system
a network of radar and communications units intended to detect at the earliest possible moment an attack by enemy aircraft or missiles
anything that gives advance notice of something
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