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
Cite this Entry
“Region.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/region. Accessed 14 Oct. 2026.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
