| 释义 | 
		car·box·yl·ase \kärˈbäksəˌlās\ noun (-s) Etymology: International Scientific Vocabulary carboxyl + -ase  : an enzyme of either of two groups that catalyze decarboxylation or carboxylation:  a.  : any enzyme that accelerates the removal of carbon dioxide from a carboxyl group especially in alpha-keto acids; specifically  : an enzyme first recognized in yeast that converts pyruvic acid to acetaldehyde and carbon dioxide in living cells and in alcoholic fermentation — see cocarboxylase  b.  : any enzyme that accelerates the addition of carbon dioxide to form a carboxyl group (as in the conversion of pyruvic acid to oxalacetic acid) — usually distinguished from decarboxylase |