Hi TJFC,
This is a condition where the wing cannot produce enough lift to support the aircraft's weight and centrifugal force, in spite of otherwise flying at a reasonable airspeed and angle of attack.
I suspect I've gawn off on one and that we agree. It is just the "and" bit I have issue with in that Wikipedia explanation you quoted. Ignoring the misleading bit about a stall being lift unable to support weight, you will never ever never stall at a "reasonable" angle of attack (where reasonable<crit alpha). An accelerated stall is merely the need for you to increase AoA past critical alpha to cope with the increased demands on the wing due to G/weight/etc.
