Definition of hydrogen peroxide in US English:

hydrogen peroxide

noun

Chemistry
  • A colorless, viscous, unstable liquid with strong oxidizing properties, commonly used in diluted form in disinfectants and bleaches.

    Chemical formula: H₂O₂

    • ‘This can be carried out using chemical oxidation agents such as hydrogen peroxide, ozone, or potassium dichromate.’
    • ‘Without catalysis, hydrogen peroxide decomposes slowly over time to form water and oxygen gas.’
    • ‘That doesn't produce enough hydrogen peroxide to oxidize all organic matter in the soil.’
    • ‘Superoxides react with water to produce molecular oxygen and hydrogen peroxide.’
    • ‘Typically, hydrogen peroxide is an oxidizing and reducing agent.’

Pronunciation

hydrogen peroxide

/ˈhaɪdrədʒən pəˈrɑkˌsaɪd//ˈhīdrəjən pəˈräkˌsīd/