Us·tu·la·tion n.
 1. The act of burning or searing. [R.]
 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.

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