n. Any considerable and connected part of a space or surface; specifically, a tract of land or sea of considerable but indefinite extent; a country; a district; in a broad sense, place without special reference to location or extent: as, the equatorial regions; the temperate regions; the polar regions; the upper regions of the atmosphere.n. An administrative division of a city or territory; specifically, such a division of the city of Rome and of the territory about Rome, of which the number varied at different times; a district, quarter, or ward (modern rione).n. Figuratively, the inhabitants of a region or district of country.n. In anatomy, a place in or a part of the body in any way indicated: as, the abdominal regions.n. Place; rank; station; dignity.n. Specifically, the space from the earth's surface out to the orbit of the moon: properly called the elemental region.n. In zoögeog., a large faunal area variously limited by different authors.n. Of the thorax, same as inframammary region.n. Synonyms Quarter, locality, clime, territory.n. In the plan of excavations at Pompeii, one of the primary divisions introduced by Fiorelli about 1860. The arrangement is based on a misconception but has nevertheless been retained. Each region contains several blocks or insulæ.n. In phytogeography: A mountain belt marked by peculiar floral types; an altitudinal zone. Thus used by Humboldt, who for the equatorial district of the Andes distinguished nine such regions. Schimper also prefers this term to zone in treating of mountain belts. He distinguishes, on purely œcological grounds, basal, montane, and alpine mountain regions.n. A comprehensive territorial unit with sufficient uniformity of conditions to secure uniformity in vegetation. A region will include several formations and will itself be included in some larger unit, as a realm.n. For a special use, see life zone.