D defs.my
Entry 4 senses Webster, 1913

Ustulation

· Us·tu·la·tion · IPA /ʌstjʊˈleɪʃən/
01 n. The act of burning or searing.
  1. 1.
    The act of burning or searing.[R.]
  2. 2.
    The operation of expelling one substance from another by heat, as sulphur or arsenic from ores, in a muffle.(Old Chem.)
  3. 3.
    The roasting or drying of moist substances so as prepare them for pulverizing.(Pharm.)
  4. 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.