\Quad"rate\, 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.
         Figures, some round, some triangle, some quadrate.
                                               --Foxe.
2. Produced by multiplying a number by itself; square. ``
   Quadrate and cubical numbers.'' --Sir T. Browne.
3. Square; even; balanced; equal; exact. [Archaic] `` A
   quadrate, solid, wise man.'' --Howell.
4. Squared; suited; correspondent. [Archaic] `` A generical
   description quadrate to both.'' --Harvey.
{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.

\Quad"rate\, 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.
         At which command, the powers militant That stood for
         heaven, in mighty quadrate joined.    --Milton.
2. (Astrol.) An aspect of the heavenly bodies in which they
   are distant from each other 90[deg], or the quarter of a
   circle; quartile. See the {Note} under {Aspect}, 6.
3. (Anat.) The quadrate bone.

\Quad"rate\, 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]
      The objections of these speculatists of its forms do
      not quadrate with their theories.        --Burke.

\Quad"rate\, v. t.
To adjust (a gun) on its carriage; also, to train (a gun) for
horizontal firing.