[kwod-ruh-cher, -choo r]
- the act of squaring.
- the act or process of finding a square equal in area to a given surface, especially a surface bounded by a curve.
- the act or process of finding an area or calculating an integral, especially by numerical methods.
- a definite integral.
- the situation of two heavenly bodies when their longitudes differ by 90°.
- either of the two points in the orbit of a body, as the moon, midway between the syzygies.
- (of the moon) those points or moments at which a half moon is visible.
- Electronics. the relation between two signals having the same frequency that differ in phase by 90°.
Origin of quadrature
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for quadrature
Possibly the one who wrote on the quadrature of the circle in 1881.A Budget of Paradoxes, Volume II (of II)
Augustus de Morgan
In six dialogues: the sixth contains a quadrature of the circle.
His attempt to prove the impossibility of the quadrature appeared in 1645.
More curious than his quadrature is his name; what are we to make of it?
He carried the quadrature of the circle to 120 decimal places.The Every Day Book of History and Chronology
- maths the process of determining a square having an area equal to that of a given figure or surface
- the process of making square or dividing into squares
- astronomy a configuration in which two celestial bodies, usually the sun and the moon or a planet, form an angle of 90° with a third body, usually the earth
- electronics the relationship between two waves that are 90° out of phase
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- The process of constructing a square equal in area to a given surface.
- A configuration in which the position of one celestial body is 90° from another celestial body, as measured from a third. For example, the half moon lies in quadrature from the Sun when Earth is the reference point. See more at elongation.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.