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ester definition

es·ter (es′tər)

noun

an organic compound, comparable to an inorganic salt: generally, HR (inorganic acid) +ROH (alcohol) = RR (ester) + HO (water) or RCOOH (organic acid) + ROH = RCOOR (ester) + HO

Etymology: Ger, contr. < essigäther < essig, vinegar (< L acetum: see aceto-) + äther (< L aether), ether

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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