The Collaborative International Dictionary of English v.0.48:

Evaporate \E*vap"o*rate\, v. i. [imp. & p. p. Evaporated; p.
   pr. & vb. n. Evaporating.] [L. evaporatus, p. p. of
   evaporare; e out + vapor steam or vapor. See Vapor.]
   1. To pass off in vapor, as a fluid; to escape and be
      dissipated, either in visible vapor, or in particles too
      minute to be visible.
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   2. To escape or pass off without effect; to be dissipated; to
      be wasted, as, the spirit of a writer often evaporates in
      the process of translation.
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            To give moderate liberty for griefs and discontents
            to evaporate . . . is a safe way.     --Bacon.
      [1913 Webster]