Source : Webster's Revised Unabridged Dictionary (1913)

Quadrate \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.