1. a chemical process in which bacteria or yeast breaks down sugars in organic matter, often producing alcohol or acids
Usage: biology; chemistry
2. a state of excitement, agitation, or unrest
Usage: figurative

Examples

• The fermentation of grapes produces wine.
• Yeast causes fermentation in bread dough.
• Fermentation is essential in making yogurt and cheese.
• The fermentation process takes several weeks to complete.
• Scientists study fermentation to improve food production.
• The political fermentation led to widespread protests.
• There was great fermentation in the crowd before the announcement.