quad

v. (in Printing) fill with quadrats

n. room at a hotel for four people; (Slang) quadruplet, one of four siblings born from one pregnancy; (in Printing) quadrat, block of type with less height than other letters used to create a space between words or letters; (Anatomy) quadriceps muscle; (Computers) quarter of a byte, 2 bits

n. quadrilateral, four-sided and four-angled plane figure (such as a square or rectangle)

QUaD, an acronym for QUEST at DASI, is a ground based cosmic microwave backrground (CMB) polarization experiment located at the South Pole. QUEST (Q and U Extragalactic Sub-mm Telescope) was the original name attributed to the bolometer detector instrument, while DASI is a famous CMB interferometry experiment credited with the first detection of CMB polarization. QUaD uses the existing DASI mechanical infrastructure but replaces the DASI interferometric array with a bolometer detector at the end of a cassegrain optical system.
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Quad may refer to:ArchitectureQuadrangle in architecture, e.g., on a university campusQuad, a dormitory room or suite housing four residents
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Quad Electroacoustics is a British manufacturer of hi-fi equipment, based in Huntingdon, England.
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Noun
1. one of four children born at the same time from the same pregnancy
(synonym) quadruplet
(hypernym) sibling, sib
2. a muscle of the thigh that extends the leg
(synonym) quadriceps, quadriceps femoris, musculus quadriceps femoris
(hypernym) extensor muscle, extensor
(part-holonym) thigh
3. (printing) a block of type without a raised letter; used for spacing between words
(synonym) space
(hypernym) type
(hyponym) hair space
(classification) printing, printing process
4. a rectangular area surrounded on all sides by buildings
(synonym) quadrangle
(hypernym) area

(n.)
A quadrat.
  

(n.)
A quadrangle; hence, a prison.
  

(a.)
Alt. of Quade
  

A group of four wires composed of two pairs twisted together. Note: The pairs have a fairly long length of twist and the quad a fairly short length of twist. (188 )