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ethanol (ethyl alcohol)
CH3CH2OH. A vehicle fuel typically made from fermenting sugar derived from biomass (typically corn, sugar cane, or wheat) that can replace ordinary gasoline in modest percentages (blends) in spark ignition engines or be used in pure form in specially modified vehicles. Nearly all ethanol is produced by fermenting plant sugars and starches (or hydrolyzed cellulose or hemicellulose in the future); however, it can also be produced from fossil feedstock. The mileage per gallon in vehicles yielded by ethanol is roughly two-thirds that of gasoline.
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