Quad

Quad may refer to:

Architecture

• Quadrangle in architecture, e.g., on a university campus
• Quad, a dormitory room or suite housing four residents
• Quad Cities, a region which includes the Iowa cities of Bettendorf and Davenport and the Illinois cities of Moline, East Moline, and Rock Island

Armaments

• Quad indicates four guns in a single mounting

Beer

• Quadrupel is a Belgian style ale of great strength with bolder flavor compared to its Dubbel and Tripel sister styles.

Games

• Quad Damage, a Quake and Unreal Tournament power-up
• Quad, a type of combined robotic enemy in the Nintendo Gamecube game Metroid Prime 2
• Quad (more commonly Quads), four of a kind in poker
• Quad, a Harkonnen attack vehicle from the computer game Dune 2
• Quad cannon, an anti-air weapon in Command & Conquer: Generals

International Trade

• The Quadrilateral group of finance ministers

Music, theatre and film

• Quad (play), by Samuel Beckett
• Quad (music), a musical project by Gary Ramon
• Quad (cinema), art house in New York City
• Quad Electroacoustics, a British manufacturer of electronic amplifiers, tuners and loudspeakers mainly for the high-end domestic market
• Quadraphonic, or four-channel sound
• Quadrophenia, a 1973 album by The Who
• Quad Toms, marching percussion instrument
• Quad, a film poster in the United Kingdom typically measuring 30 by 40 inches (76 × 102 cm)
• The Quads, the British new-wave band
• QuadCarbon, fictional corporation in movie Proof of Life
• John Callahan's Quads!, an animated series from Nelvana
• Quad, a unit of computer storage measurement in the fictional Star Trek universe
• Derby QUAD, an arts centre in Derby, England
• The Quad, a part of Hogwarts Castle (made only for films and games).

Places

• David R. Francis Quadrangle
• Rez Quad
• University of Alabama Quad

Politics

• In the United Kingdom; the informal cabinet grouping of David Cameron, Nick Clegg, George Osborne, and Danny Alexander

Science and mathematics

• Quadriceps, a group of muscles
• Quadruped, a creature or mechanism which moves on four legs
• Quad (energy), a unit of energy (short for quadrillion) defined as 10¹⁵ British thermal units (about 1.055 exajoule (EJ) or 1.055 × 10¹⁸ J)
• Quadrilateral, a four sided figure in plane geometry
• Quadratic, the second power in mathematics
• Quadrangle (geography), a 7.5-minute topographic map produced by the United States Geological Survey, covering in greater detail one quarter of the area of a 15-minute map
• Quadrilateralized Spherical Cube, a mapping scheme for data collected on a spherical surface, such as a planet
• QUaD, a telescope located at the South Pole that is designed to measure the cosmic microwave background radiation polarization
• Quadratic Formula, the equation used to solve quadratic equations

Society and religion

• Quad, a derogatory term for a quadriplegic
• Quadrangle Club, one of the ten eating clubs at Princeton University
• BU Quad, student publication of Boston University started in 2009

Sports

• Quad, a boat configuration in rowing that contains 4 people, with 2 oars each, and no coxswain
• Quad, a chairlift in skiing which carries four persons
• Quad (figure skating), a figure skating jump with four revolutions
• Quad skates, roller skates with two wheels on each of two axles
• Quad, A type of surfboard containing 4 fins
• Quad, (Wrestling) A Dual Meet consisting of 4 teams. Also called a Quadangular.
• Quad, an All-Terrain Vehicle (ATV) with four wheels.

Technology

• Quad antenna, a directional antenna
• Quad-core, a multi-core processor with 4 cores
• Quadtree, a tree data structure typically used to partition a 2-dimensional space
• Quad precision, a number stored using 16 eight-bit bytes, which is four times the size of 4-byte single precision
• Quad Flat Package, a type of package for surface mounted integrated circuit
• Quad Electroacoustics, a British manufacturer of electronic amplifiers, tuners and loudspeakers mainly for the high-end domestic market
• Quad, an abbreviation for a type of videotape recorder, especially 2" Quadruplex videotape, where there are four record heads on a spinning drum which move perpendicular to the direction of tape travel
• Quad, telecommunication term referring to four conductors formation used to form two balanced pairs
  • Star quad, four conductors in square formation, in which opposite conductors are connected in parallel at both ends to form a single, magnetically-concentric balanced pair, in order to minimise magnetic induction
• Quadraphonic sound, or four-channel sound
• quad, abbreviation for Quadrupole ion trap
• Em quad, in typography, a space that is as wide as the height of the font
  • En quad, a space that is one half the width of an em quad
• QUAD (cipher), a stream cipher
• Quadruple precision floating-point format, a data type in computer programming.

Vehicles

• Quadriga
• Quadruple combination fire apparatus that features a pump, tank, hose and a full complement of ground ladders
• Quad, a tandem bicycle with four seats
• Quad, a muscle car with a four-barrel carburetor
• Quad, the nickname of the Morris C8 artillery gun tractor
• Quad (rocket), an autonomous rocket by Armadillo Aerospace
• Quads refer to four exhaust pipes (usually grouped two on each end) of a vehicle
• Quad bikes, four-wheeled all-terrain vehicles.
• other term for a speeder, a motorized vehicle used for maintenance of ways on railroads