practitioner
UK: /prækˈtɪʃənə/ | US: /prækˈtɪʃənər/
n. a person actively engaged in a profession, especially medicine or law
n. someone who practices a skill or art
The word "practitioner" originates from the Latin practicus (meaning "practical"), derived from Greek praktikos ("fit for action"). The morpheme practic evolved into "practice" in Middle English, referring to the act of performing a skill. The suffix -tion nominalizes the verb, and -er denotes a person who performs the action. Thus, a "practitioner" is literally "one who practices" a profession or skill.
She is a licensed medical practitioner with over 20 years of experience.
Yoga practitioners often emphasize mindfulness and breathing techniques.
The legal practitioner advised his client on the best course of action.
Traditional Chinese medicine practitioners use herbs and acupuncture.
As a practitioner of classical piano, he performs regularly at concerts.