quadrature

noun

1. 1

   The process of making something square; squaring.

2. 2

   The act or process of constructing a square that has the same area as a given plane figure, or of computing that area.

3. 3

   (numerical analysis) The calculation of a definite integral by numerical means.

4. 4

   The act or process of solving an indefinite integral by symbolic means.

5. 5

   A situation in which the directions of two celestial bodies (or a celestial body and the Sun) form a right-angle from the perspective of the observer.

   “When the Moon is in quadrature, it appears in the sky as a half-moon.”

6. 6

   The condition in which the phase angle between two alternating quantities is 90°.

7. 7

   A painting painted on a wooden panel.