a. [ L. quadratus squared, p. p. of quadrare to make four-cornered, to make square, to square, to fit, suit, from quadrus square, quattuor four. See Quadrant, and cf. Quadrat, Quarry an arrow, Square. ] 1. Having four equal sides, the opposite sides parallel, and four right angles; square. [ 1913 Webster ]

Figures, some round, some triangle, some quadrate. Foxe. [ 1913 Webster ]

2. Produced by multiplying a number by itself; square. “ Quadrate and cubical numbers.” Sir T. Browne. [ 1913 Webster ]

3. Square; even; balanced; equal; exact. [ Archaic ] “ A quadrate, solid, wise man.” Howell. [ 1913 Webster ]

4. Squared; suited; correspondent. [ Archaic ] “ A generical description quadrate to both.” Harvey. [ 1913 Webster ]

Quadrate bone (Anat.), a bone between the base of the lower jaw and the skull in most vertebrates below the mammals. In reptiles and birds it articulates the lower jaw with the skull; in mammals it is represented by the malleus or incus. [ 1913 Webster ]

n. [ L. quadratum. See Quadrate, a. ] 1. (Geom.) A plane surface with four equal sides and four right angles; a square; hence, figuratively, anything having the outline of a square. [ 1913 Webster ]

At which command, the powers militant
That stood for heaven, in mighty quadrate joined. Milton. [ 1913 Webster ]

2. (Astrol.) An aspect of the heavenly bodies in which they are distant from each other 90°, or the quarter of a circle; quartile. See the Note under Aspect, 6. [ 1913 Webster ]

3. (Anat.) The quadrate bone. [ 1913 Webster ]

v. i. [ imp. & p. p. Quadrated p. pr. & vb. n. Quadrating. ] [ See Quadrate, a. ] To square; to agree; to suit; to correspond; -- followed by with. [ Archaic ] [ 1913 Webster ]

The objections of these speculatists of its forms do not quadrate with their theories. Burke. [ 1913 Webster ]

v. t. To adjust (a gun) on its carriage; also, to train (a gun) for horizontal firing. [ 1913 Webster ]