Pair

Pair or PAIR or Pairing may refer to:

Government and politics

 * Pair (parliamentary convention), matching of members unable to attend, so as not to change the voting margin
 * Pair, a member of the Prussian House of Lords
 * Pair, the French equivalent of peer, holder of a French Pairie, a French high title roughly equivalent to a member of the British peerage

Mathematics

 * 2 (number), two of something, a pair
 * Unordered pair, or pair set, in mathematics and set theory
 * Ordered pair, or 2-tuple, in mathematics and set theory
 * Pairing, in mathematics, an R-bilinear map of modules, where R is the underlying ring
 * Pair type, in programming languages and type theory, a product type with two component types
 * Topological pair, an inclusion of topological spaces

Science and technology

 * Couple (app), formerly Pair, a mobile application for two people
 * PAIR (puncture-aspiration-injection-reaspiration), in medicine
 * Pairing, a handshaking process in Bluetooth communications
 * Pair programming, an agile software development technique
 * Pairing (computing), the linking together of devices to allow communications between them
 * Twisted pair, a couple of electric wires twisted together

Sports and games

 * Pair, a team of two in pair skating
 * Pair (cricket), a cricket term for being out for 0 in both innings of a match
 * One pair (poker), a type of poker hand
 * Coxless pair or coxed pair, racing rowing shells

Other uses

 * Au pair, a work agreement
 * Grow a pair, referring to testicles, a slang term meaning act with more courage
 * Patent Application Information Retrieval, an online service providing access to the prosecution histories of U.S. patents and patent applications
 * Peer-Allocated Instant Response, for distance learning in the Netherlands
 * Parts pairing, prevents parts from being swapped
 * Wine pairing, the process of pairing food dishes with wine to enhance the dining experience