Regio (pl. ''regiones'') is the Latin word for ‘ region’ and the Italian word for ‘royal’ It may refer to: * Regiopolis, 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 unrele ...

, 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 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'', 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 , which ...

*** 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 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. ...

***

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 ...

*** Tombaugh Regio **A regio of Titan: *** Tui Regio **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

Ancient toponymy

Astronomy

See also