Definition: Apothecary: A person who practices medicine on behalf of others, often as a form of religious or commercial enterprise. The term refers to a person or organization involved in providing health care services under the direction or supervision of a physician. Definition: An apothecary is someone who practices medicine on behalf of others by working with patients and performing medical procedures under the direction of a physician. This profession may involve receiving payment from insurance companies, selling prescription drugs directly to consumers, or conducting research into new treatments for diseases. Apothecaries are often associated with hospitals, clinics, and other healthcare facilities that provide care to those in need of treatment.