1.  disorganisation(n = noun.state) disarrangement, disorganization - a condition in which an orderly system has been disrupted;
Derived form verb disorganise₁

2.  disorganisation(n = noun.act) disorganization - the disturbance of a systematic arrangement causing disorder and confusion; "the disorganization of the enemy troops by a flank attack"
Derived form verb disorganise₁