QUOTE (Uncle Nick @ Jun 2 2006, 8:42 am)

a.o. Prof. außerordentlicher Professor - an unusual professor?
Yes... but an o.Prof. = ordentlicher Professor, "ordinary professor" outranks him.
It actually means a professor without a chair.
Which again does not mean that he has to stand, but it is in some Länder a second-rank professorship, comparable to an associate professor (sometimes the latin words Ordinarius and Extraordinarius are used). In the more mundane Länder, it is simply referred to as a "C3" or "W2", just reflecting the different pay grade.
Don't ask what außerplanmäßiger Professor is...