- the act of flying while waiting for combat orders or for enemy airplanes to appear.
- the signal to take stations for such action.
Origin of air alert
First recorded in 1940–45
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the condition in which combat aircraft are airborne and ready for an operation
- a signal to prepare for this
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