Regio (pl. ''regiones'') is the Latin word for ‘

region In geography, regions, otherwise referred to as areas, zones, lands or territories, are portions of the Earth's surface that are broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and ...

’ and the Italian word for ‘royal’ It may refer to: *

Regiopolis In Germany, a regiopolis is a city outside the core of a metropolitan area, that serves as an independent driving force for development within a larger region. The concept is used to develop midsized urban regions within regional, national and g ...

, a concept for urban centers in between metropolitan areas.

Ancient toponymy

* Regiones of Augustan Italy, the departments in which Roman Emperor Augustus divided Italy. * 14 regions of the Augustan Rome, in ancient Rome as a name for quartiers of the city of Rome * 14 regions of Medieval Rome, resulting from the redivision of the Rome after the revolution of 1143 *Regio, in ancient

Constantinople Constantinople (#Names of Constantinople, see other names) was a historical city located on the Bosporus that served as the capital of the Roman Empire, Roman, Byzantine Empire, Byzantine, Latin Empire, Latin, and Ottoman Empire, Ottoman empire ...

as a name for the 14 quarters of the city of Constantinople, defined in analogy with those of Rome * Regio Aromatica, name for the Horn of Africa *'' Regiones'', administrative subdivisions of the kingdoms of Anglo-Saxon England

Astronomy

Regio (astronomy) Planetary geology, alternatively known as astrogeology or exogeology, is a planetary science discipline concerned with the geology of celestial bodies such as planets and their Natural satellite, moons, asteroids, comets, and meteorites. Although ...

, which, in planetary geology, is a large area of a planet or moon that is strongly differentiated in colour or albedo **A regio of Venus: *** Alpha Regio *** Asteria Regio *** Beta Regio *** Ovda Regio **A regio of Pluto: *** Belton Regio *** Lowell Regio *** Tombaugh Regio **A regio of Titan: ***

Tui Regio Tui Regio (located at 20°S, 130°W) is a region on Titan, the Saturnian moon, in the southwest corner of Xanadu, named after Tui, a Chinese goddess of happiness, joy and water. Tui appears to lack the erosion channels that mark other highland ...

**A regio of Ganymede: *** Galileo Regio **A regio on Phoebe: *** Leto Regio **A regio on Iapetus: *** Cassini Regio

Ancient toponymy

Astronomy

See also