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Quad :: Quad (n.) A quadrat.

Quadrature :: Quadrature (a.) The act of squaring; the finding of a square having the same area as some given curvilinear figure; as, the quadrature of a circle; the operation of finding an expression for the area of a figure bounded wholly or in part by a curved line, as by a curve, two ordinates, and the axis of abscissas..

Quadrae :: Quadrae (pl. ) of Quadr.

Quadrans :: Quadrans (n.) The fourth of a penny; a farthing. See Cur.

Backstaff :: Backstaff (n.) An instrument formerly used for taking the altitude of the heavenly bodies, but now superseded by the quadrant and sextant; -- so called because the observer turned his back to the body observed..

Quadrat :: Quadrat (n.) An old instrument used for taking altitudes; -- called also geometrical square, and line of shadows..

Bow :: Bow (v. t.) A rude sort of quadrant formerly used for taking the sun's altitude at sea.

Quadrangle :: Quadrangle (n.) A square or quadrangular space or inclosure, such a space or court surrounded by buildings, esp. such a court in a college or public school in England..

Sort :: Sort (n.) Letters, figures, points, marks, spaces, or quadrats, belonging to a case, separately considered..

Quadrate :: Quadrate (a.) Produced by multiplying a number by itself; square.

Quadrilateral :: Quadrilateral (n.) A plane figure having four sides, and consequently four angles; a quadrangular figure; any figure formed by four lines..

Quadrat :: Quadrat (n.) A block of type metal lower than the letters, -- used in spacing and in blank lines..

Quadrant :: Quadrant (n.) One of the four parts into which a plane is divided by the coordinate axes. The upper right-hand part is the first quadrant; the upper left-hand part the second; the lower left-hand part the third; and the lower right-hand part the fourth quadrant.

Conquadrate :: Conquadrate (v. t.) To bring into a square.

Quadrangle :: Quadrangle (n.) A plane figure having four angles, and consequently four sides; any figure having four angles..

Quadrantal :: Quadrantal (a.) Of or pertaining to a quadrant; also, included in the fourth part of a circle; as, quadrantal space..

Quadrible :: Quadrible (a.) Quadrable.

Gunter''s Scale :: Gunter's scale () A scale invented by the Rev. Edmund Gunter (1581-1626), a professor of astronomy at Gresham College, London, who invented also Gunter's chain, and Gunter's quadrant..

Quadrature :: Quadrature (a.) The position of one heavenly body in respect to another when distant from it 90¡, or a quarter of a circle, as the moon when at an equal distance from the points of conjunction and opposition..

Quadragesima :: Quadragesima (n.) The forty days of fast preceding Easter; Lent.

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