A German phrase meaning until we meet again or till I see you again, used as a farewell.
This is the formal and polite way to say the goodbye.
Dr. King Schultz: Normally Monsieur Candie, I would say, auf wiedersehen. But since what auf wiedersehen actually means is, till I see you again, and since I never wish to see you again, to you sir, I say, Goodbye!!