n. The status, methods, character or standards expected of a professional or of a professional organization, such as reliability, discretion, evenhandedness, and fair play.
n. The use of professionals rather than amateurs in any sport etc.
the GNU version of the Collaborative International Dictionary of English
n. The following of a profession, sport, etc., as an occupation; -- opposed to amateurism.
The Century Dictionary and Cyclopedia
n. The characteristics, ideas, or methods of professional persons; that which savors of a professional, especially when so marked as to become objectionable or offensive: specifically used of athletic sports, etc., opposed to the methods or work of amateurs.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the expertness characteristic of a professional person
Word Usage
"I understand the term professionalism played a large part in the early stages of this fiasco, which is almost too shocking to be believed."