1. Human effort to imitate, supplement, alter, or counteract the work of nature. 2. 1. The conscious production or arrangement of sounds, colors, forms, movements, or other elements in a manner that affects the sense of beauty, specifically the production of the beautiful in a graphic or plastic medium. 2. The study of these activities. 3. The product of these activities; human works of beauty considered as a group. 3. High quality of conception or execution, as found in works of beauty; aesthetic value.