Definify.com

Webster 1913 Edition

Adj.

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.

“Pride, not personal, but professional.”

Macaulay.

“A professional sneerer.”

De Quincey.

Engaged in by professionals;

as, a

professional

race

; – opposed to

amateur

Noun.

A person who prosecutes anything professionally, or for a livelihood, and not in the character of an amateur; a professional worker.

Adj.

Pertaining to a profession or to a calling; as professional studies, pursuits, duties,engagements; professional character or skill.