fusel oil

[ fyoo-zuh l, -suh l ]
/ ˈfyu zəl, -səl /

noun

a mixture consisting chiefly of amyl alcohols obtained as a by-product in the fermentation of grains.

Origin of fusel oil

First recorded in 1855–60, fusel oil is from the German word Fusel bad liquor
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for fusel oil

fusel oil

fusel

/ (ˈfjuːzəl) /

noun

a mixture of amyl alcohols, propanol, and butanol: a by-product in the distillation of fermented liquors used as a source of amyl alcohols

Word Origin for fusel oil

C19: from German Fusel bad spirits
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Science definitions for fusel oil

fusel oil
[ fyōōzəl ]

An acrid, oily, poisonous liquid occurring in the distillation products of fermented alcoholic liquids. Fusel oil is a mixture of amyl alcohols, fatty acids, and esters. It is used in paints, plastics, and varnishes, and in the manufacture of explosives.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.