ustulation

from The Century Dictionary.

• noun The act of burning or searing.
• noun In metallurgy, the operation of expelling one substance from another by heat, as sulphur and arsenic from ores in a muffle.
• noun In pharmacy: The roasting or drying of moist substances so as to prepare them for pulverizing.
• noun The burning of wine.

from the GNU version of the Collaborative International Dictionary of English.

• noun rare The act of burning or searing.
• noun (Old Chem.) The operation of expelling one substance from another by heat, as sulphur or arsenic from ores, in a muffle.
• noun The roasting or drying of moist substances so as prepare them for pulverizing.
• noun The burning of wine.
• noun obsolete Lascivious passion; concupiscence.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun the action or fact of burning, especially roasting