The past tense of Oxidate is oxidated.
verb. enter into a combination with oxygen or become converted into an oxide.
verb. add oxygen to or combine with oxygen.
1. Verb, non-3rd person singular present When nitrogen oxides oxidate in the atmosphere, they produce nitric acid. 2. Verb, base form Catalases use hydrogen peroxide to oxidate chemical reactions and kill free radicals, and are especially active in your blood.