Definition(s)
- Damage to biological tissues caused by superoxide and other free radicals generated as a result of intoxication, antimicrobial cellular immunity, metabolic abnormality, or "normal" aging; do not confuse with hypoxia or hyperoxia.
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Definition from: CRISP Thesaurus via Unified Medical Language System at the National Library of Medicine
- Physiological stress on the body that is caused by the cumulative damage done by free radicals inadequately neutralized by antioxidants and that is held to be associated with aging.
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Definition from: Merriam-Webster's Medical Dictionary by Merriam-Webster Inc.
See also Understanding Medical Terminology.