bottom fermentation

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WORDNET DICTIONARY

Noun bottom fermentation has 1 sense

bottom fermentation(n = noun.process) - a slow kind of alcoholic fermentation at a temperature low enough that the yeast cells can sink to the bottom of the fermenting liquid; used in the production of lager;

CIDE DICTIONARY

bottom fermentation,

A slow alcoholic fermentation during which the yeast cells collect at the bottom of the fermenting liquid. It takes place at a temperature of 4Webster 1913 Suppl.]