Artificial intelligent assistant

æthiops mineral

æthiops mineral Chem. Obs.
  (See quot.)

1706 Phillips, æthiops Mineral, a Medicine made by Imbodying equal Parts of running Quicksilver and Flower of Brimstone, and then Deflagrating or Burning off the Mixture in a Crucible. 1755 Johnson, æthiops Mineral, a Medicine, so-called from its dark colour, prepared from quicksilver and sulphur, ground together in a marble mortar to a black powder. [J. cites Quincy.]

Oxford English Dictionary

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