IBU
abbreviation or noun
plural IBUs
: a unit of measurement used to assess the concentration of a bitter compound found in hops in order to provide information about how bitter a beer is
Brewers use the IBU to convey how bitter their beer is due to the addition of hops …—Jonathan Chadwick
Dogfish Head Brewery is releasing what will be "the hoppiest beer ever documented through scientific analysis," coming in at 658 IBUs.—Joanna Harkins
called also International Bitterness Unit, International Bittering Unit
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Merriam-Webster unabridged
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