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1.
This word was introduced by Jim Halpert on the American version of "The Office" as a threat to co-worker Dwight Schrute. It is assumed that Dwight will be in a great deal of trouble if he receives a dissagilation.

Thus, it is assumed it is a disciplinary action.
"Well. I want it on my desk by 5pm this evening, or you will receive a complete dissagilation"
by Lance Doucette August 22, 2007