Main Entry: hy·dra·tase Pronunciation: 'hI-dr&-"tAs, 'hI-drA-, -"tAz Function: noun : any of several lyases that catalyze the hydration ordehydration of a carbon-oxygen bond
hydratase hy·dra·tase (hī'drə-tāz', -tāz') n. Any of various lyases that catalyze the addition or removal of water from a substrate. Also called hydrase.