WordGarden.ioperoxide
C2Pronunciation
UK
- /pərˈɒksaɪd/
US
- /pərˈɑkˌsaɪd/
Meanings
Noun
hydrogen peroxide, especially the liquid used to disinfect, bleach, or lighten hair
a chemical compound containing an oxygen-oxygen bond
Beyond the definition
You've probably seen peroxide used to lighten hair, but it's much more than just a beauty product! The word often refers to hydrogen peroxide, a clear liquid that can look pale blue in higher concentrations. It is widely used for cleaning, bleaching, and disinfecting. You may remember the fizz it makes when it touches blood or damaged skin; that reaction comes from oxygen being released.
Peroxide isn't just in your medicine cabinet, though. It is also used to bleach fabrics, whiten teeth, clean surfaces, and even help power rockets in some forms. The name points to the extra oxygen link that makes these chemicals so reactive. So, next time you see peroxide, remember that it can mean either a common household liquid or a broader group of chemicals with many practical uses.
Peroxide refers to a class of chemical compounds that contain an oxygen-oxygen single bond. The best-known example is hydrogen peroxide (), the clear liquid many people keep at home, but there are many other peroxides as well. So the word can refer either to that familiar liquid or, more broadly, to this whole chemical group.
Hydrogen peroxide is well known because it is a strong oxidizing agent. In simple terms, it reacts easily with other substances and can break down many colored or living materials. That is why it is used to lighten hair, whiten fabrics and teeth, and disinfect some surfaces. It can kill many germs, but it is not always the best choice for open wounds because it can also irritate or damage healthy tissue.
However, peroxides are not always gentle. Higher concentrations can be corrosive or dangerous, so they must be handled carefully. Some organic peroxides are especially unstable and are used in industrial processes where strong reactions are needed.
Beyond household use, peroxides play important roles in many industries. They are used in making plastics, textiles, paper, and medicines, and some are used in rocket systems because they can release oxygen efficiently and support combustion.
So, whether you are bleaching laundry, cleaning a surface, or studying industrial chemistry, peroxide is a word that points to highly useful oxygen-rich chemicals. In everyday English, it usually means hydrogen peroxide, but in science it has a wider meaning.
Examples
- 1
First aid
I found a small bottle of hydrogen peroxide in the bathroom cabinet.
- 2
Stain removal
She dabbed a little peroxide on the bloodstain before washing the shirt.
- 3
Hair bleaching
His hair looked almost white after he bleached it with peroxide.
- 4
Hair color
The actress was famous for her peroxide-blonde hair.
- Phraseperoxide-blonde
very light blond, usually made lighter with chemicals
More examplesFewer examples
- 5
Industrial safety
Some industrial peroxides must be stored carefully because they can react violently.
See also
Shades of meaning
- bleaching agent
- antiseptic
Used with (collocations)
- hydrogen peroxide
- benzoyl peroxide
- peroxide solution
Word family
- peroxidize
- peroxidation
Explore
- oxygen-oxygen bond
- oxidizer
Forms and spellings
4 forms open this card.
Main spelling
- peroxidenounverb
Forms
- peroxidespluralnounverb
- peroxidedpast tenseverbnoun
- peroxiding-ing formverbnoun