- The definition of a practitioner is someone practicing a skilled profession for which special education or licensing is required.
A doctor who practices medicine is an example of a practitioner.
- a person who practices a profession, art, etc.: a medical practitioner
- ☆ a Christian Science healer
Origin of practitioner; from earlier practician, one qualified by practice (; from Middle French practicien: see practice and amp; -ian) + -er
Origin of practitionerAlteration of practician, from Old French practicien, from practiser, to practice; see practice.
Formerly practicioner for *practicianer, from practician + -er (the suffix unnecessarily added, as in musicianer).