English

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Etymology

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From seleno- +‎ -mancy.

Noun

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selenomancy (uncountable)

  1. Divination by the appearance and phases of the moon. Similar to lunomancy.
    • 1923, Lynn Thorndike, A History of Magic and Experimental Science, page 98:
      He is openly incredulous about the gem glossopetra, shaped like a human tongue and supposed to fall from the sky during an eclipse of the moon and to be invaluable in selenomancy.
    • 2019, Leah Hager Cohen, Strangers and Cousins, page 240:
      For millennia we have tried to fathom it: via selenography and selenomancy, poetry and algebra, robots and rockets.