Abstract objects

1. Objects not palpable, concrete or sense-perceivable, viz concepts, impressions, certain qualities or states, etc.

2. Representations of real objects in which varying degrees of information or characteristics are missing, for example, limiting form or shape, relationship of parts, indications of size or scale, colour, movement, etc.

3. Abstract art.

4. Abstractions; a pejorative term for vague generalizations.