[ok-si-juh-neys, -neyz]
noun Biochemistry.
an oxidoreductase enzyme that catalyzes the introduction of molecular oxygen into an organic substance.

1900–05; oxygen + -ase

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Medical Dictionary

oxygenase ox·y·gen·ase (ŏk'sĭ-jə-nās', -nāz')
An enzyme that catalyzes the incorporation of molecular oxygen into its substrate. Also called direct oxidase.

The American Heritage® Stedman's Medical Dictionary
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