1. existing in thought or as an idea but not having a physical or concrete existence.
"abstract concepts such as love or beauty"
2. relating to or denoting art that does not attempt to represent external reality, but rather seeks to achieve its effect
using shapes, colours, and textures.
1. the branch of philosophy dealing with such notions as the beautiful, the ugly, the sublime, the comic, etc., as applicable to the fine arts, with a view to establishing the meaning and validity of critical judgments concerning works of art, and the principles underlying or justifying such judgments.
2. the study of the mind and emotions in relation to the sense of beauty.