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fusel oil Syllabification: fu·sel oil
Pronunciation: /ˈfyo͞ozəl ˌoil/

Definition of fusel oil in English:


A mixture of several alcohols (chiefly amyl alcohol) produced as a byproduct of alcoholic fermentation.
Example sentences
  • Brachiaria decumbens seeds submitted to fusel oil did not germinate and were rendered totally unviable.
  • The crude fusel oil must be submitted to a careful distillation with a thermometer in the retort.
  • The term fusel oil is strictly the remains of a pot or batch distillation, the compounds with low volatility.


Mid 19th century: from German Fusel 'bad liquor', probably related to fuseln 'to bungle'.

Definition of fusel oil in:
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