aes·the·ti·cian [èsth? tísh’n] (plural aes·the·ti·cians) or es·the·ti·cian [èsth? tísh’n] (plural es·the·ti·cians) noun 1. somebody who studies beauty: a student or devotee of the principles of art or beauty 2. person giving beauty treatments: somebody whose job is to give people beauty treatments