Ethiops

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Ethiops \E"thi*ops\n. [NL. See {Ethiop}.] (Old Chem.)
     A black substance; -- formerly applied to various
     preparations of a black or very dark color. [Written also
     {[ae]thiops}.] [Obs.]
     [1913 Webster]
  


     {Ethiops martial} (Old Chem.), black oxide of iron.
  
     {Ethiops mineral} (Old Chem.), black sulphide of mercury,
        obtained by triturating mercury with sulphur.
  
     {Ethiops per se} (Old Chem.), mercury in finely divided
        state, having the appearance of a dark powder, obtained by
        shaking it up or by exposure to the air. Ethmoid