air alert

/ɛər əˌlʌrt/

Definitions of air alert

1. noun

   the time period during which military and civilian agencies are prepared for an enemy air attack
   type of:

   period, period of time, time period

   an amount of time
2. noun

   the warning signal that begins a period of preparation for an enemy air attack
   type of:

   alarm, alarum, alert, warning signal

   an automatic signal (usually a sound) warning of danger
3. noun

   the condition in which combat aircraft are airborne and ready for an operation
   “aircraft in the Mideast are on air alert”

   type of:

   alert, qui vive

   condition of heightened watchfulness or preparation for action