( a. )
Of or pertaining to a profession, or calling; conforming to the rules or standards of a profession; following a profession; as, professional knowledge; professional conduct.
( a. )
Of or pertaining to a profession, or calling; conforming to the rules or standards of a profession; following a profession; as, professional knowledge; professional conduct.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012