practitioner

UK: /prækˈtɪʃ^ənə^r/ US: /prækˈtɪʃənɚ/ ,(prak tish′ə nər)

WordReference Random House Learner's Dictionary of American English © 2025

prac•ti•tion•er /prækˈtɪʃənɚ/   n. [countable]

1. a person working in the practice of a profession or occupation:
   a medical practitioner.
2. one who practices or works at something mentioned:
   They were practitioners of the great art of lying.

WordReference Random House Unabridged Dictionary of American English © 2025

prac•ti•tion•er  (prak tish′ə nər), n. 

1. a person engaged in the practice of a profession, occupation, etc.:
   a medical practitioner.
2. a person who practices something specified.
3. Religion [Christian Science.] a person authorized to practice healing.

• alteration of practician (practic + -ian) + -er¹ 1535–45

Collins Concise English Dictionary © HarperCollins Publishers::

practitioner / prækˈtɪʃənə/ noun

1. a person who practises a profession or art
2. a person authorized to practise spiritual healing

Etymology: 16th Century: from practician, from Old French praticien, from pratiquer to practise