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Definition of "peroxide" [per•ox•ide]

  • A compound, such as sodium peroxide, Na2O2, that contains a peroxyl group and yields hydrogen peroxide when treated with an acid. (noun)
  • Hydrogen peroxide. (noun)
  • To treat with peroxide. (verb-transitive)
  • To bleach (hair) with hydrogen peroxide. (verb-transitive)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "peroxide" in a sentence
  • "To remove stains from crazing you will need to obtain peroxide from a beauty supply store, and cut it with water at 1 part water to 2 parts peroxide (note, these instructions are for peroxide – do not use bleach!"
  • "Now, hydrogen peroxide is VERY oxidative, so in addition to breaking the law, you are also driving a lot of oxidative reactions."
  • "The fuel, hydrogen peroxide, is contained within a small cartridge."