[hahy-dreys, -dreyz]
noun Biochemistry.
any of the class of enzymes that catalyze the addition of a water molecule into a compound without causing hydrolysis.

1940–45; hydr-1 + -ase

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Medical Dictionary

hydrase hy·drase (hī'drās', -drāz')
See hydratase.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Microsomal styrene mono-oxygenase and styrene epoxide hydrase activities in rats.
Epoxide hydrase activity in these tissues was not increased by the diesel exposure.
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