Quadra'ture. n.s. [quadrature, Fr. quadratura, Latin.]
- The act of squaring.
The speculations of algebra, the doctrine of infinites, and the quadrature of curves should not intrench upon our studies of morality. Watt's Improvement of the Mind.
- The first and last quarter of the moon.
It is full moon, when the earth being between the sun and moon, we see all the enlightened part of the moon; new moon, when the moon being between us and the sun, its enlightened part is turned from us; and half moon, when the moon being in the quadratures, we see but half the enlightened part. Locke.
- The state of being square; a quadrate; a square.
All things parted by th' empyreal bounds,
His quadrature from thy orbicular world. Milton.