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

region In geography, regions, otherwise referred to as zones, lands or territories, are areas that are broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and the interaction of humanity and t ...

’ 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 ...

, 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 Fourteen or 14 may refer to: * 14 (number), the natural number following 13 and preceding 15 * one of the years 14 BC, AD 14, 1914, 2014 Music * 14th (band), a British electronic music duo * ''14'' (David Garrett album), 2013 *''14'', an unre ...

, 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 la, Constantinopolis ota, قسطنطينيه , alternate_name = Byzantion (earlier Greek name), Nova Roma ("New Rome"), Miklagard/Miklagarth ( Old Norse), Tsargrad ( Slavic), Qustantiniya (Arabic), Basileuousa ("Queen of Cities"), Megalopolis ( ...

as a name for the 14 quarters of the city of Constantinople, defined in analogy with those of Rome *

Regio Aromatica The Horn of Africa (HoA), also known as the Somali Peninsula, is a large peninsula and geopolitical region in East Africa.Robert Stock, ''Africa South of the Sahara, Second Edition: A Geographical Interpretation'', (The Guilford Press; 2004), ...

, 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 the celestial bodies such as the planets and their moons, asteroids, comets, and meteorites. Although the geo ...

, 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 Alpha (uppercase , lowercase ; grc, ἄλφα, ''álpha'', or ell, άλφα, álfa) is the first letter of the Greek alphabet. In the system of Greek numerals, it has a value of one. Alpha is derived from the Phoenician letter aleph , whic ...

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Asteria Regio Asteria Regio is a region on the planet Venus Venus is the second planet from the Sun. It is sometimes called Earth's "sister" or "twin" planet as it is almost as large and has a similar composition. As an interior planet to Earth, Venus ...

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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 given ...

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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 o ...

**A regio of Pluto: ***

Cthulhu Regio Cthulhu Macula (formerly ''Cthulhu Regio'') is a prominent surface feature of the dwarf planet Pluto, that is reminiscent of a whale in shape. It is an elongated dark region along Pluto's equator, long and one of the darkest features on Pluto. ...

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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 that was launched as a part of NASA's New Frontiers program. Engin ...

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Tombaugh Regio Tombaugh Regio () is the largest bright surface feature of the dwarf planet Pluto. It is just north of the equator, to the northeast of Cthulhu Macula and to the northwest of Krun Macula, which are both dark features. Its western lobe, a -wide ...

**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 Xanadu may refer to: * Shangdu, the ancient summer capital of Kublai Khan's empire in China * a metaphor for opulence or an idyllic p ...

**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 has ...

**A regio on Phoebe: ***

Leto Regio Leto Regio is a geological feature on Phoebe, a small outer moon of Saturn Saturn is the sixth planet from the Sun and the second-largest in the Solar System, after Jupiter. It is a gas giant with an average radius of about nine and a half ...

**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 ...

Ancient toponymy

Astronomy

See also