The Collaborative International Dictionary of English v.0.48:

Revert \Re*vert"\, v. t. [imp. & p. p. Reverted; p. pr. & vb.
   n. Reverting.] [L. revertere, reversum; pref. re- re- +
   vertere to turn: cf. OF. revertir. See Verse, and cf.
   Reverse.]
   1. To turn back, or to the contrary; to reverse.
      [1913 Webster]

            Till happy chance revert the cruel scence. --Prior.
      [1913 Webster]

            The tumbling stream . . .
            Reverted, plays in undulating flow.   --Thomson.
      [1913 Webster]

   2. To throw back; to reflect; to reverberate.
      [1913 Webster]

   3. (Chem.) To change back. See Revert, v. i.
      [1913 Webster]

   To revert a series (Alg.), to treat a series, as y = a + bx
      + cx^2 + etc., where one variable y is expressed in
      powers of a second variable x, so as to find therefrom the
      second variable x, expressed in a series arranged in
      powers of y.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Reverted \Re*vert"ed\, a.
   Turned back; reversed. Specifically: (Her.) Bent or curved
   twice, in opposite directions, or in the form of an S.
   [1913 Webster]