Artificial intelligent assistant

encrustment

encrustment
  (ɛnˈkrʌstmənt)
  [f. encrust v. + -ment.]
  concr. That which is deposited by the action of encrusting; an outer encrusted layer or shell. Also fig.

1861 Craik Hist. Eng. Lit. I. 561 That rich..spirit of drollery..penetrating through all enfoldings and rigorous encrustments into the kernel of the ludicrous. 1876 Blackmore Cripps II. xiv. 211 The trees..glistened rather with soft moisture than with stiff encrustment.

Oxford English Dictionary

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