oxidizer

noun
UK /ˈɒksɪdaɪzə/
US /ˈɑːksɪdaɪzər/

An oxidizer is a thing that helps other things burn or rust by giving them oxygen.

The rocket carries an oxidizer so its fuel can burn in space.


OTHER MEANINGS

2. A chemical that takes electrons from another substance in a reaction.

In this reaction, the oxidizer gains electrons while the metal loses them.

3. A substance used in rocket engines to make fuel burn without air.

Liquid oxygen is a common oxidizer in rocket engines.

4. An ingredient in products like bleach or hair dye that lightens color.

The hair dye contains an oxidizer that lightens the natural color.