Definition of "superoxide" [su•per•ox•ide]

• A peroxide (noun)
• The univalent anion, O2-, obtained from molecular oxygen by adding an electron; any compound containing this anion (noun)

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• "The key ingredient is an enzyme called superoxide dismutase, thought to ..."
• "- Aloe Vera - It is believes that the regular use of aloe vera gel activates the production of nitric oxide and contains an enzyme known as superoxide dismutane."
• "Free radicals: By examining tissue from 18 ALS families, a team led by Dr. Robert Brown of Massachusetts General Hospital found that sufferers shared a number of mutations in the gene that enables the body to produce an enzyme called superoxide dismutase, or SOD."