Source : Webster's Revised Unabridged Dictionary (1913)

Perversion \Per*ver"sion\, n. [L. perversio: cf. F. perversion.
   See {Pervert}.]
   The act of perverting, or the state of being perverted; a
   turning from truth or right; a diverting from the true intent
   or object; a change to something worse; a turning or applying
   to a wrong end or use. ``Violations and perversions of the
   laws.'' --Bacon.

Source : WordNet®

perversion
     n 1: a curve that reverses the direction of something; "the
          tendrils of the plant exhibited perversion"; "perversion
          also shows up in kinky telephone cords"
     2: an aberrant sexual practice that is preferred to normal
        intercourse [syn: {sexual perversion}]
     3: the action of perverting something (turning it to a wrong
        use); "it was a perversion of justice"