quadrature
[kwodruhcher, choo r]

noun
the act of squaring.
Mathematics.
 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.
Astronomy.
 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. 2019
Examples from the Web for quadrature
Historical Examples of 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.
A Budget of Paradoxes, Volume I (of II)Augustus De Morgan
His attempt to prove the impossibility of the quadrature appeared in 1645.
A Budget of Paradoxes, Volume I (of II)Augustus De Morgan
More curious than his quadrature is his name; what are we to make of it?
A Budget of Paradoxes, Volume I (of II)Augustus De Morgan
He carried the quadrature of the circle to 120 decimal places.
The Every Day Book of History and ChronologyJoel Munsell
quadrature
noun
Collins English Dictionary  Complete & Unabridged 2012 Digital Edition
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quadrature
[kwŏd′rəchur′]
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.