From Longman Dictionary of Contemporary Englishantioxidantan‧ti‧ox‧i‧dant /ˌæntiˈɒksɪdənt $ -ˈɑːk-/ noun [countable] a substance in some foods that cleans the body and protects it from cancer
Examples from the Corpus
antioxidant• Researchers there were intrigued by findings that red wine, in test-tube experiments, was found to be an antioxidant.• Other plants such as maize may be susceptible to chilling stress because they have an inadequate antioxidant defences.• The 1995 text addresses the science linking antioxidant nutrients found in plant foods with a potentially beneficial role in fighting disease.• Vitamin A and its metabolites appear to have potent antioxidant properties.• It is a powerful protective antioxidant and lavish amounts of the best quality olive oil can be consumed without risk. 