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  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Etherin  \E"ther*in\,  n.  (Chem.) 
  A  white,  crystalline  hydrocarbon,  regarded  as  a  polymeric 
  variety  of  ethylene,  obtained  in  heavy  oil  of  wine,  the 
  residue  left  after  making  ether;  --  formerly  called  also 
  {concrete  oil  of  wine}.