An antioxidant keeps a substance from degrading or decaying by inhibiting the chemical reaction called oxidation, the reaction of substances to exposure to oxygen molecules.(noun)
An example of an antioxidant is wax used on a car to prevent rust.
The definition of an antioxidant is something that prevents or repairs damage that has been done to the body by oxidation.(noun)
An example of an antioxidant is Vitamin A.
Antioxidant is defined as any substance that prevents or repairs the process of oxidation.(adjective)
An example of something that is described as antioxidant are pomegranates.
See antioxidant in Webster's New World College Dictionary
See antioxidant in American Heritage Dictionary 4
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