prakˈtish(ə)nə(r) noun
( -s )
Etymology: practition- (alteration of practician) + -er
1. : one that exercises an art, science, or profession (as law, medicine, or engineering) — see general practitioner
2. : one that does something or follows some course or regimen habitually or customarily
3. obsolete : one that practices something (as an art or a profession) to acquire or maintain proficiency : a learner or novice
4. : one who engages in the public practice of Christian Science healing and applies it to human ills and problems