region

noun

1. an extensive, continuous part of a surface, space, or body: a region of the earth.
2. Usually regions. the vast or indefinite entirety of a space or area, or something compared to one: the regions of the firmament; the regions of the mind.
3. a part of the earth’s surface (land or sea) of considerable and usually indefinite extent: a tropical region.
4. a district without respect to boundaries or extent: a charming region in Connecticut.
5. a part or division of the universe, as the heavens: a galactic region.
6. a large indefinite area or range of something specified; sphere: a region of authority.
7. an area of interest, activity, pursuit, etc.; field: studies in the region of logic.
8. an administrative division of a city or territory.
9. Zoogeography. a major faunal area of the earth’s surface, sometimes one regarded as a division of a larger area.
10. Anatomy. a place in or a division of the body or a part of the body: the abdominal region.
11. Mathematics.
    1. Also called domain.an open connected set.
    2. the union of such a set and some or all of its boundary points.

noun

1. any large, indefinite, and continuous part of a surface or space
2. an area considered as a unit for geographical, functional, social, or cultural reasons
3. an administrative division of a countryTuscany is one of the regions of the Italian Republic
4. a realm or sphere of activity or interest
5. range, area, or scopein what region is the price likely to be?
6. a division or part of the bodaythe lumbar region
7. (in Scotland from 1975 until 1996) any of the nine territorial divisions into which the mainland of Scotland was divided for purposes of local government; replaced in 1996 by council areasSee also islands council

n.

c.1300, “tract of land of a considerable but indefinite extent,” from Anglo-French regioun, Old French region “land, region, province” (12c.), from Latin regionem (nominative regio) “a district, portion of a country, territory, district; a direction, line; boundary line, limit,” noun of state from past participle stem of regere “to direct, rule” (see regal). Phrase in the region of “about” (of numbers, etc.) is recorded from 1961.

n.

1. An area of the body having natural or arbitrary boundaries.
2. A portion of the body having a special nervous or vascular supply.
3. A part of an organ with a special function.

see in the neighborhood (region) of.