Source : Webster's Revised Unabridged Dictionary (1913)

Introvert \In`tro*vert"\, v. t. [imp. & p. p. {Introverted}; p.
   pr. & vb. n. {Introverting}.] [Pref. intro- + L. vertere,
   versum, to turn.]
   1. To turn or bend inward. ``Introverted toes.'' --Cowper.

   2. To look within; to introspect. --Lew Wallace.

Source : WordNet®

introverted
     adj : examining own sensory and perceptual experiences [syn: {introspective}]
           [ant: {extrospective}]