Olefin Definition
 ōlə-fĭn 
  olefins
  
    noun
  
 
    olefins
  
Webster's New World 
Any of a class of unsaturated open-chain hydrocarbons having at least one double bond.
 American Heritage 
A fiber or fabric made of this material.
 American Heritage 
Other Word Forms of Olefin
Noun
Singular:
 olefinPlural:
 olefinsOrigin of Olefin
-  
French (gaz) oléfiant oil-forming (gas), ethylene Latin oleum oil oil French -fiant present participle of -fier -fy
From American Heritage Dictionary of the English Language, 5th Edition
 
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