from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A chemical compound or substance that inhibits oxidation.
  • n. A substance, such as vitamin E, vitamin C, or beta carotene, thought to protect body cells from the damaging effects of oxidation.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any substance that acts to slow or prevent the oxidation of another chemical.
  • n. In nutrition, one of a group of vitamins that act against the effects of free radicals.
  • adj. Acting or having agents that act against oxidation.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. substance that inhibits oxidation or inhibits reactions promoted by oxygen or peroxides


Sorry, no etymologies found.


  • Today the term antioxidant usually encompasses vitamin C, vitamin E, beta-carotene and other related carotenoids, as well as the minerals selenium and manganese, which are needed by several free-radical-destroying enzymes in order to work properly.

    Eat, Drink, and Be Healthy

  • Basically the term antioxidant refers to substance that will help to slow or halt the oxidation process.

    Chocolate therapy | Baking Bites

  • The use of the term antioxidant continues to grow, however, and attempts by marketers to up their claims are drawing on results from tests of 'antioxidant activity'.

    NutraIngredients RSS

  • From berry extracts to tea bags, the term antioxidant is being used as a marketing tool for products.


  • These conclusions have implications for the growing number of food using the term antioxidant, and increasingly quoting ORAC values to back up the activity claims.

    FoodQualityNews RSS

  • 10-Mar-2009 - From berry extracts to tea bags, the term antioxidant is being used as a marketing ...

    NutraIngredients-USA RSS

  • The compounds are called antioxidant inflammation modulators because they spur the release of antioxidants while suppressing the body's inflammatory response, each thought to be involved in a range of diseases, also including Parkinson's and chronic obstructive pulmonary disease.

    Abbott Labs Licenses Molecules from Reata

  • An in-house USANA study found that the combination of grape-seed extract and vitamin C in Proflavanol C100 provides long-term antioxidant activity and better protective effects than if they were not combined.

    Innovative Nutritional Hybrid Technology Introduced at USANA International Convention -- SALT LAKE CITY, Sept. 13 /PRNewswire/ --

  • The word antioxidant gets thrown around quite a bit.


  • Glutathione is an antioxidant, which is reduced to GSSG in the presence of reactive oxygen species.

    Global change and contaminants in the Arctic

Wordnik is becoming a not-for-profit! Read our announcement here.


Log in or sign up to get involved in the conversation. It's quick and easy.

  • hydrophilic:
    L-ascrobic acid, L-ascorbic acid 6-palmitate, glutathione (reduced form), (+)-catechin, and (-)-epicatechin showed effective SOD-like activity.

    Cinnamon oil, gamma-oryzanol, extract of rosemary leaf, L-alpha-lecithin, and L-alpha-cephalin

    March 28, 2011

  • Blueberry ice cream rules!!!

    August 16, 2007

  • This is Dear S? I'd rather eat blue berries *and* wear my seatbelt. Tell him that he should eat the blueberries and skip the okra, or something that's actually gross.

    August 16, 2007

  • He said he did not need to eat blueberries because he wears his seatbelt. That is what he said. *groan here*

    August 10, 2007