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ceruleum


ceruleum


  1  definition  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Ceruleum  \Ce*ru"le*um\,  n.  [NL.] 
  A  greenish  blue  pigment  prepared  in  various  ways,  consisting 
  essentially  of  cobalt  stannate.  Unlike  other  cobalt  blues,  it 
  does  not  change  color  by  gaslight.