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 7 BC, Augustus divided the city of Rome into 14 administrative regions (Latin , ). These replaced the four —or "quarters"—traditionally attributed to Servius Tullius, sixth king of Rome. They were further divided into official neighborh ...

, in ancient Rome as a name for quartiers of the city of Rome *

14 regions of Medieval Rome During the Middle Ages, Rome was divided into a number of administrative regions (Latin, ''regiones''), usually numbering between twelve and fourteen, which changed over time. Evolution of the Regions Originally the city of Rome had been divided by ...

, 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 ''Regiones'' (singular: ''regio'') or ''provinciae'',(singular: ''provincia''), also referred to by historians as small shires or early folk territories, were early territorial divisions of Anglo-Saxon England, referred to in sources such as Anglo ...

'', 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 Beta Regio is a region of the planet Venus known as a ''volcanic rise''. Measuring about in extent, it constitutes a prominent upland region of Venus centered at . The first features that showed up in early radar surveys of the planet were give ...

***

Ovda Regio Ovda Regio is a Venusian crustal plateau located near the equator in the western highland region of Aphrodite Terra that stretches from 10°N to 15°S and 50°E to 110°E. Known as the largest crustal plateau in Venus, the regio covers an area of ...

**A regio of Pluto: ***

Belton Regio Belton Regio (formerly Cthulhu Macula or Cthulhu Regio) is a prominent surface feature of the dwarf planet Pluto. It is an elongated dark region along Pluto's equator, long and one of the darkest features on its surface. After its discovery in ...

***

Lowell Regio Lowell Regio is a region on the dwarf planet Pluto. It was discovered by the ''New Horizons ''New Horizons'' is an Interplanetary spaceflight, interplanetary space probe launched as a part of NASA's New Frontiers program. Engineered by t ...

***

Tombaugh Regio Tombaugh Regio (), sometimes nicknamed "Pluto's heart" after its shape, is the largest bright surface feature of the dwarf planet Pluto. It lies just north of Pluto's equator, to the northeast of Belton Regio and to the northwest of Safronov ...

**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 Galileo Regio is a large, dark surface feature on Jupiter's moon Ganymede. It is a region of ancient dark material that has been broken apart by tectonism and is now surrounded by younger, brighter material (such as that of Uruk Sulcus) that h ...

**A regio on Phoebe: ***

Leto Regio Phoebe ( ) is the most massive irregular satellite of Saturn with a mean diameter of . It was discovered by William Henry Pickering on 18 March 1899 from photographic plates that had been taken by DeLisle Stewart starting on 16 August 1898 at ...

**A regio on Iapetus: ***

Cassini Regio Cassini Regio (adjective ''Cassinian'' ) is the enigmatic dark area that covers the leading half of Saturn's moon Iapetus. It is named after Giovanni Cassini, the discoverer of Iapetus; ' Regio' is a term used in planetary geology for a large a ...

Ancient toponymy

Astronomy

See also