quad¹ /kwod/

Short form of Quaalude® (US; informal), quadrangle, quadraphonic (see under quadraphonics), quadraphonics, quadraphony (see quadraphonics), quadrat, quadriceps, quadrillion, quadruped (ie horse), quadruplet (see under quadruple)

To fill with quadrats

quad² or Quad /kwod/

A small, powerful four-wheel-drive vehicle, used eg in military, agricultural and sporting activities (also quad bike)

quadrat /kwodˈrət/

1. A piece of type metal less high than the letters, used in spacing between words and filling out blank lines (commonly called a quad; printing)
2. A small area (usu one square metre) of ground marked off for the detailed investigation of animal and plant life (ecology)

quadˈrate /-rāt or -rit/ adjective

1. Square
2. Rectangular
3. Squarish
4. Squared
5. Square, as a power or root (obsolete mathematics)
6. Complete (obsolete)
7. Corresponding, consistent (obsolete)

1. A square or quadrate figure or object
2. The quadrate bone, suspending the lower jaw in vertebrates other than mammals
3. Quartile (obsolete astronomy)

1. To square
2. To make consistent

quadratic /-ratˈik/ adjective

1. Of or like a quadrate
2. Involving the square but no higher power, as a quadratic equation (mathematics)
3. Tetragonal (crystallography)

1. A quadratic equation
2. (in pl) the branch of algebra dealing with quadratic equations

quadratˈical adjective

quadrāˈtrix noun

A curve by which a curved figure (such as a circle) may be squared

quadˈrature /-rə-chər/ noun

1. Squareness (obsolete)
2. The finding of a square with an area equal to a given figure (mathematics)
3. An angular distance of 90º
4. The position of a heavenly body at such an angular distance from another body, or the time of its being there
5. A phase angle of 90º within a cycle (electronics)
6. A square space (Milton)

quadrāˈtus noun (anatomy)

The name of several flat rectangular muscles

B quadrāˈtum

Quadrate B (see under B)

quadrature of the circle see under square

quadruple /kwodˈrə-pl or (esp Scot) -rooˈ/

1. Fourfold
2. Having four parts, members or divisions

1. Four times as much
2. A coin worth four pistoles (historical)

1. To increase fourfold, multiply by four
2. To equal four times

To become four times as much

quadˈruplet (or /-rooˈ/) noun

1. Any combination of four things
2. One of four (children or animals) born at one birth (informal short form quad)
3. A group of four notes performed in the time of three (music)
4. A cycle for four riders

quadˈruply /-pli or -rooˈpli/ adverb

In a fourfold manner

Quadruple Alliance noun

A league formed in 1718 by Britain, France, Austria and Holland against Spain, or one formed in 1813 by Britain, Prussia, Austria and Russia against Napoleon

quadruple time noun (music)

A time with four beats to the bar

• cross-hatched
• cross-hatches
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• crosshead
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• cross-index
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• cross-indexes
• cross-indexing
• cross-infect
• cross-infected
• cross-infecting
• cross-infection
• cross-infections
• disaccustomed
• disaccustoming
• disaccustoms
• disacknowledge
• disacknowledged
• disacknowledges
• disacknowledging
• disadorn
• disadorned
• disadorning
• disadorns