[an-tee-ok-si-duh nt, an-tahy-]
- Chemistry. any substance that inhibits oxidation, as a substance that inhibits oxidative deterioration of gasoline, rubbers, plastics, soaps, etc.
- Biochemistry. an enzyme or other organic substance, as vitamin E or beta carotene, that is capable of counteracting the damaging effects of oxidation in animal tissues.
- Chemistry. of or relating to an antioxidant.
Origin of antioxidant
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for antioxidant
This at-home blood test kit gives a full reading of antioxidant, fatty acid, or vitamin panels.Nothing Says I Love You Like Data
The Daily Beast
December 8, 2014
CBD has been shown to have significant health benefits as an antioxidant and neuroprotectant.Ricki Lake: The ‘Weed the People’ Filmmaker on Why We Should Legalize Marijuana
May 20, 2014
That creates a large oxidative stress,” he says, “so we would expect an antioxidant [like vitamin E] to be helpful.Will Supplements Kill You?
October 11, 2011
- any substance that retards deterioration by oxidation, esp of fats, oils, foods, petroleum products, or rubber
- biology a substance, such as vitamin C, vitamin E, or beta carotene, that counteracts the damaging effects of oxidation in a living organism
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for antioxidant
Online Etymology Dictionary, © 2010 Douglas Harper
- A chemical compound or substance that inhibits oxidation. Certain vitamins, such as vitamin E, are antioxidants and may protect body cells from damage caused by the oxidative effects of free radicals.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.