Pair

Pair or PAIR 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, French high title roughly equivalent to a member of the British peerage

Mathematics

• 2 (number), two of something, a pair
• 2-tuple, in mathematics and set theory
• Ordered pair, in mathematics and set theory
• Pairing, in mathematics, an R-bilinear map of modules, where R is the underlying ring
• Product type, a term in programming languages and type theory
• 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
• Pair, 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, a cricket term for being out for 0 in both innings of a match
• One pair (poker), a type of poker hand

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
• Wine pairing, the process of pairing food dishes with wine to enhance the dining experience

See also

• Couple (disambiguation), various senses for two joined things
• Even (disambiguation)
• Pear, a fruit
• Pare peoplea Tanzanian ethnic group
• Paired test, a student's t-test in statistical hypothesis testing