Sentence:  These include low-temperature <WSD>ethanol</WSD> ( Cohn ) fractionation , electrophoresis , ultracentrifugation and column chromatography on ion exchange celluloses . 
Meaning of the word marked with <WSD> tags:  the intoxicating agent in fermented and distilled liquors; used pure or denatured as a solvent or in medicines and colognes and cleaning solutions and rocket fuel; proposed as a renewable clean-burning additive to gasoline