[es-tuh-reys, -reyz]

noun Biochemistry.

any enzyme that hydrolyzes an ester into an alcohol and an acid.

Origin of esterase

First recorded in 1915–20; ester + -ase Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for esterase



any of a group of enzymes that hydrolyse esters into alcohols and acids
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

esterase in Medicine


[ĕstə-rās′, -rāz′]


Any of various enzymes that catalyze the hydrolysis of an ester.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.