D defs.my
Entry 2 senses Webster, 1913

Illinition

· Il·li·ni·tion · IPA /ɪlɪˈnɪʃən/
01 n. A smearing or rubbing in or on; also, that which is smeared or rubbed on, as ointment or liniment.
  1. 1.
    A smearing or rubbing in or on; also, that which is smeared or rubbed on, as ointment or liniment.
  2. 2.
    A thin crust of some extraneous substance formed on minerals.[R.]
    “A thin crust or illinition of black manganese.” — Kirwan.