One of the mysteries of the English language finally explained.
A mixture of several alcohols (chiefly amyl alcohol) produced as a by-product of alcoholic fermentation.
- ‘The fusel oil which is produced in refining stage I is withdrawn from column 4 via a pipeline 7.’
- ‘Brachiaria decumbens seeds submitted to fusel oil did not germinate and were rendered totally unviable.’
- ‘The term fusel oil is strictly the remains of a pot or batch distillation, the compounds with low volatility.’
- ‘For the producers of potable alcohol, fusel oil normally must be removed during the distillation process.’
- ‘The crude fusel oil must be submitted to a careful distillation with a thermometer in the retort.’
Mid 19th century: from German Fusel ‘bad liquor’, probably related to fuseln ‘to bungle’.
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