1. Sensitive to art of beauty. "Aesthetically pleasing" implies intellectual or visual beauty (i.e., creative, eloquent, or expressive qualities of form, as opposed to the mere recording of facts in visual, descriptive, or objective ways). 2. The study or theory of beauty- traditionally a branch of philosophy but now a compound of the philosophy, psychology, and sociology of art- dealing with the definition, inspiration, intent, forms and psychological effects of art and beauty.