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a. An agent, such as an enzyme, bacterium, or fungus, that brings about fermentation.
a. A state of agitation or of turbulent change or development.
b. An agent that precipitates or is capable of precipitating such a state; a catalyst.
v. (fər-mĕnt′) fer·ment·ed, fer·ment·ing, fer·ments
1. To undergo fermentation: cabbage that has fermented.
2. To develop in a turbulent or agitated way; seethe: an idea that was fermenting in his mind for months.
1. To cause to undergo fermentation: Yeasts ferment sugars.
2. To produce by or as if by fermentation: ferment the wine in oak barrels; hostility that was fermented by envy.
3. To make turbulent; excite or agitate: a fiery speech that fermented the crowd.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||fermenting - a process in which an agent causes an organic substance to break down into simpler substances; especially, the anaerobic breakdown of sugar into alcohol|
bottom fermentation - 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
chemical action, chemical change, chemical process - (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved
top fermentation - a violent kind of alcoholic fermentation at a temperature high enough to carry the yeast cells to the top of the fermenting liquid; used in the production of ale; "top fermentation uses a yeast that ferments at higher temperatures than that used for bottom fermentation"
vinification - the process whereby fermentation changes grape juice into wine
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