\Us`tu*la"tion\, n. [Cf. F. ustulation.]
1. The act of burning or searing. [R.] --Sir W. Petty.
2. (Old Chem.) The operation of expelling one substance from
   another by heat, as sulphur or arsenic from ores, in a
   muffle.
3. (Pharm.)
   (a) The roasting or drying of moist substances so as
       prepare them for pulverizing.
   (b) The burning of wine.
4. Lascivious passion; concupiscence. [Obs.]
         It is not certain that they took the better part
         when they chose ustulation before marriage,
         expressly against the apostle.        --Jer. Taylor.