1) An enzyme 
<enzyme> An enzyme that catalyses the hydrolysis of organic esters to release an alcohol or thiol and acid. The term could be applied to enzymes that hydrolyse carboxylate, phosphate and sulphate esters, but is more often restricted to the first class of substrate. ... (18 Nov 1997) ... 
(es´tәr-ās) any enzyme that catalyzes the hydrolysis of an ester into its alcohol and acid.
An enzyme that catalyses the hydrolysis of organic esters to release an alcohol or thiol and acid. The term could be applied to enzymes that hydrolyze carboxylate, phosphate and sulphate esters, but is more often restricted to the first class of substrate.
Type: Term Pronunciation: es′tĕr-ās Definitions: 1. A generic term for enzymes (EC class 3.1, hydrolases) that catalyze the hydrolysis of esters.
any enzyme that hydrolyzes an ester into an alcohol and an acid.