The Collaborative International Dictionary of English v.0.48:

Exulcerate \Ex*ul"cer*ate\, v. t. & i. [L. exulceratus, p. p. of
   exulcerare to make sore; ex out + ulcerare. See Ulcerate.]
   1. To ulcerate. [Obs.] "To exulcerate the lungs." --Evelyn.
      [1913 Webster]

   2. To corrode; to fret; to chafe; to inflame. [Obs.]
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            Minds exulcerated in themselves.      --Hooker.
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The Collaborative International Dictionary of English v.0.48:

Exulcerate \Ex*ul"cer*ate\, a. [L. exulceratus, p. p.]
   Very sore; ulcerated. [Obs.] --Bacon.
   [1913 Webster]