# Quadrature

## Quad"ra*ture

(?), n. [L.*quadratura*: cf. F.

*quadrature*. See Quadrate, a.] 1.

*(Math.)*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.

[1913 Webster]

2. A quadrate; a square.
*Milton.*

[1913 Webster]

3.
*(Integral Calculus)* The integral used in obtaining the area bounded by a curve; hence, the definite integral of the product of any function of one variable into the differential of that variable.

[1913 Webster]

4.
*(Astron.)* 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.

[1913 Webster]

**Quadrature of the moon**
*(Astron.)*, the position of the moon when one half of the disk is illuminated. --
**Quadrature of an orbit**
*(Astron.)*, a point in an orbit which is at either extremity of the latus rectum drawn through the empty focus of the orbit.

[1913 Webster]

### New - Add Dictionary Search to Your Site

You can add a free dictionary search box to your own web site by copying and pasting the following HTML into one of your web pages:

<form action="http://www.freedict.co.uk/search.php" method="post"> <p style="text-align: center; font-family: sans-serif;"> <a style="font-weight: bold;" href="http://www.freedict.co.uk/" title="FreeDict free online dictionary">FreeDict</a> <input type="text" name="word" size="20" value="" /> <input type="submit" name="submit" value="Search Dictionary" /> </p> </form>

a b c d e f g h i j k l m n o p q r s t u v w x y z

Sun 08th December 2019