Extension 9278 217828948 2008-06-07T21:45:41Z C. A. Russell 6309685 [[Extension (Mozilla)]] -> [[Add-on (Mozilla)]] {{Wiktionarypar|extension}} '''Extension''' may refer to: * [[Extension (kinesiology)]], a [[Anatomical terms of motion#General motion|movement]] of a joint in which one part of the body is moved away from another. * [[Extension (metaphysics)]], the property of taking up space * [[Extension (semantics)]], the set of things to which a property applied * [[Extension (mathematics)]]; an extension of some structure is another structure which contains the original structure * [[Extension (geology)]] * [[Extension (telephone)]], an internal telephone line attached to a PBX or Centrex system * [[Software extension]], a computer program that is not useful in its own right but designed to be incorporated in another piece of software ** [[Extension (Mac OS)|System Extension]], a particular type of this software on the classic [[Mac OS]] ** Extension, a type of [[Add-on (Mozilla)|add-on]] for [[Firefox]] and other [[Mozilla Foundation|Mozilla]] projects * [[Filename extension]], a suffix to the name of a computer file applied to show its format * [[Tension (physics)]] * Extension (community development), the building of community capacity by outsiders, for instance, [[agricultural extension]] * Extension (cheerleading), a stunt in which a flyer is held in the air by the bases' fully extended arms * Extension, the classical name for the ''[[Mc1r]]'' gene. * [[Extension (music)]], a set of notes that fit outside the standard range * [[Extension, BC]] is a small former coal-mining village near [[Nanaimo]], BC, Canada * [[Enamel extension]] in [[dentistry]] * [[Extension cable]] * [[Extensive property]], in physics, a property which depends on the system size or the amount of material in the system * [[Extension school]], a school for [[continuing education]] * [[Hair extensions]], strands of hair added to supplement a person's existing hair * [[Eyelash extensions]] * [[Extensions (Manhattan Transfer album)|Extensions]] the 1979 album by [[The Manhattan Transfer]] * Extension of [[universal health care]]. {{disambig}} [[de:Extension]] [[es:Extensión]] [[fr:Extension]] [[it:Estensione]] [[ja:エクステンション]]