- Political division of an area into partially autonomous regions.
- Advocacy of such a political system.
- Loyalty to the interests of a particular region.
- A feature, such as an expression, a pronunciation, or a custom, that is characteristic of a geographic area.
- The use of regional characteristics, as of locale, custom, or speech, in literature or art.
- A policy whereby the interests of a nation in world affairs are defined in terms of particular countries or regions.