What is a "departure" in the context of flight testing / maneuvers? I was reading about the F-35 flight tests and it mentions a "departure" at a couple of places. 

What does that word mean in this context? I understand spins and stalls but what's a "departure"?


  AF-2 was the first F-35 to be flown to 9g+ and -3g, and to roll at
  design-load factor. Departure/spin resistance was also proven during
  high angle-of-attack (AOA) testing which eventually went as high as
  110 deg. AOA
  
  Pilots really like maneuverability, and the fact that the aircraft
  recovers so well from a departure allows us to say [to the designers
  of the flight control system laws], ‘you don’t have to clamp down so
  tight,


(Wikipedia Lockheed Martin F-35 Lightning II article)
Departure means that the aircraft has departed from controlled flight. From FAA news:


  A Loss of Control (LOC) accident involves an unintended departure of an aircraft from controlled flight


In this video about flight testing F-16s, the test pilot says 'intentionally departed from controlled flight' and later 'the aircraft is prone to departure if mishandled' and 'the aircraft departed in yaw'.