A person who practices a profession or art, especially law or medicine. / One who does anything customarily or habitually. / (dated) A sly or artful person.

plural of practitioner

A physician who provides primary care; treating acute and chronic illnesses and providing preventive care and health education; a family doctor.

plural of general practitioner

(medicine) A professional nursing designation recognized in some jurisdictions, denoting an individual who is fully qualified as a nurse and who has additional qualifications and authorization to provide diagnoses and/or treatments, including writing prescriptions .

plural of nurse practitioner

(medicine) A professional medical designation recognized in some jurisdictions, denoting an individual who is fully qualified and licensed to evaluate, treat, and care for patients with breathing or other cardiopulmonary disorders.

plural of respiratory practitioner

(formal) a person who practices medicine, especially one licensed to do so, such as a physician, dentist, surgeon, or veterinarian.

plural of medical practitioner