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antioxidant

 - 3 dictionary results

an⋅ti⋅ox⋅i⋅dant

[an-tee-ok-si-duhnt, an-tahy-]
–noun
1. Chemistry. any substance that inhibits oxidation, as a substance that inhibits oxidative deterioration of gasoline, rubbers, plastics, soaps, etc.
2. 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.
–adjective
3. Chemistry. of or pertaining to an antioxidant.

Origin:
1925–30; anti- + oxidant ( oxid(ize) + -ant )
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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an·ti·ox·i·dant   (ān'tē-ŏk'sĭ-dənt, ān'tī-)   
n.  
  1. A chemical compound or substance that inhibits oxidation.

  2. A substance, such as vitamin E, vitamin C, or beta carotene, thought to protect body cells from the damaging effects of oxidation.

The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Medical Dictionary

Main Entry: an·ti·ox·i·dant
Pronunciation: "ant-E-'äk-s&d-&nt, "an-"tI-
Function: noun
: any of various substances(as beta-carotene, vitamin C, and alpha-tocopherol) that inhibit oxidation or reactions promoted by oxygen and peroxides and that include many held to protect the living body from the deleteriouseffects of free radicals —antioxidant adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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