Artificial intelligent assistant

lithomancy

lithomancy
  (ˈlɪθəmænsɪ)
  [f. Gr. λίθος stone + µαντεία divination, -mancy.]
  Divination by signs derived from stones.

1646 Sir T. Browne Pseud. Ep. ii. iii. 75 The Lithomancy or divination from this stone, whereby..Helenus the Prophet foretold the destruction of Troy. 1656 Blount Glossogr., Lithomancy, divination by casting Pibble stones, or by the Load-stone. 1895 Elworthy Evil Eye 444 Lithomancy, divination with a precious stone called siderites.

Oxford English Dictionary

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