The Collaborative International Dictionary of English v.0.48:

Sublimate \Sub"li*mate\, v. t. [imp. & p. p. Sublimated; p.
   pr. & vb. n. Sublimating.] [L. sublimatus, p. p. of
   sublimare to raise, elevate, fr. sublimis high: cf. F.
   sublimer. See Sublime, a., and cf. Surlime, v. t.]
   1. To bring by heat into the state of vapor, which, on
      cooling, returns again to the solid state; as, to
      sublimate sulphur or camphor.
      [1913 Webster]

   2. To refine and exalt; to heighten; to elevate.
      [1913 Webster]

            The precepts of Christianity are . . . so apt to
            cleanse and sublimate the more gross and corrupt.
                                                  --Dr. H. More.
      [1913 Webster]

   3. (Psychology) To redirect the energy (of sexual or other
      biological drives) into a more socially acceptable or
      constructive form.
      [PJC]