Definition of region
1
:an administrative area, division, or district;
especially
:the basic administrative unit for local government in Scotland
2 a
:an indefinite area of the world or universe
b
:a broad geographic area distinguished by similar features
c (1)
:a major world area that supports a characteristic fauna
(2)
:an area characterized by the prevalence of one or more vegetational climax types
3 a
:any of the major subdivisions into which the body or one of its parts is divisible
b
:an indefinite area surrounding a specified body part
- a pain in the region of the heart
4
:a sphere of activity or interest :field
5
:any of the zones into which the atmosphere is divided according to height or the sea according to depth
6
:an open connected set together with none, some, or all of the points on its boundary
- a simple closed curve divides a plane into two regions
