Definition of "fermentation" []

• The anaerobic conversion of sugar to carbon dioxide and alcohol by yeast. (noun)
• Any of a group of chemical reactions induced by living or nonliving ferments that split complex organic compounds into relatively simple substances. (noun)
• Unrest; agitation. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "There are two main systems of fermentation, the _top fermentation_ system, which is that employed in the"
• "At this writing on December 15, the fermentation is around one half complete, and everyone at Hazlitt 1852 Vineyards is very excited about their first Ice Wine."
• "By an obscure change, which we call fermentation, these may become alcohol, the great stimulant of the world."