Look up arch in Wiktionary, the free dictionary.

An arch is a curved structure capable of spanning a space while supporting significant weight Wikipedia does not have an article with this exact name. ... Wiktionary is a Wikimedia Foundation project intended to be a free wiki dictionary (hence: Wiktionary) (including thesaurus and lexicon) in every language. ... Isometric view of a typical arch An arch is a curved structure capable of spanning a space while supporting significant weight (e. ...

Arch may also refer to:

• GNU Arch, an source code management tool
• Arch Linux, a Linux distribution founded by Judd Vinet that emphasizes simplicity
• Arches, Cantal, a commune of the Cantal département, in France
• In English an Arch Bishop is the highest ranking bishop, an Arch Duke, the highest ranking duke. It also means superior when describing behaviour (as in patronizing)
• Foot arch, in anatomy, a curved bone
• in dentistry, refers to the ensemble of teeth in either jaw
• Natural arch, a rock form with a naturally occurring passageway
• In the Midwestern United States, the Arch commonly refers to the Gateway Arch located on top of the Jefferson National Expansion Memorial in downtown St. Louis, Missouri designed by Finnish-American architect Eero Saarinen commemorating the Louisiana Purchase
• Arch, Switzerland, a municipality in the Swiss canton of Bern
• Arch is the third month of the year on the Zork calendar
• Arch form, a sectional way of structuring a piece of music based on the repetition, in reverse order, of all or most musical sections such that the overall form is symmetrical, most often around a central movement
• The prefix arch- is often used to denote a being of greater power, for example, archangel

ARCH may stand for: In computing, GNU arch is a revision control system, similar in purpose to tools such as CVS, SCCS, and Subversion. ... Arch Linux is a Linux distribution founded by Judd Vinet that emphasizes simplicity. ... Cantal is a département in south-central France. ... A bishop is an ordained member of the Christian clergy who, in certain Christian churches, holds a position of authority. ... Duke is a title of nobility which refers to the sovereign male ruler of a Continental European duchy, to a nobleman of the highest grade of the British peerage, or to the highest rank of nobility in various other European countries, including Portugal, Spain and France (in Italy, principe is... Rainbow Bridge was formed by a meandering watercourse A natural arch or natural bridge is a formation (or landform) where a rock arch forms, with a natural passageway through underneath. ... The Jefferson National Expansion Memorial is located in St. ... The Jefferson National Expansion Memorial is located in St. ... The Jefferson National Expansion Memorial is located in St. ... Nickname Gateway City, Gateway to the West, or Mound City Location Location in the state of Missouri Government Country State County United States Missouri Independent City Mayor Francis G. Slay (D) Geographical characteristics Area  - City    - Land    - Water 66. ... Saarinens Gateway Arch frames The Old Courthouse, which sits at the heart of the city of Saint Louis, near the rivers edge. ... From Frank Bond, Louisiana and the Louisiana Purchase. ... In the Zork series of interactive fiction computer games, created by Infocom and Activision, the Zork Calendar is the system for assigning calendar dates to days in the fictional Zork Timeline of the Great Underground Empire, formerly known as the Kingdom of Quendor. ... The term musical form is used in two related ways: a generic type of composition such as the symphony or concerto the structure of a particular piece, how its parts are put together to make the whole; this too can be generic, such as binary form or sonata form Musical... An Archangel is a superior or higher-ranking angel. ...

• Autoregressive conditional heteroskedasticity, the econometric model for time series analysis with stochastic variance

In econometrics, an autoregressive conditional heteroskedasticity (ARCH) model considers the variance of the current error term to be a function of the variances of the previous time periods error terms. ...

See also

• Architecture (disambiguation)