Us′tu‐la″tion (?), n. [Cf. F. ustulation.]
1. The act of burning or searing. 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.
It is not certain that they took the better part when they chose ustulation before marriage, expressly against the apostle. Jer. Taylor.