/ Dictionary / Index D dehydrogenase: Meaning and Definition of Find definitions for: de•hy•dro•gen•ase Pronunciation: (dē-hī'dru-ju-nās", -nāz"), [key] — n. Biochem. an oxidoreductase enzyme that catalyzes the removal of hydrogen. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. dehydrofreeze dehydrogenate Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language