# oxidizer

> English word · Noun · frequency rank #70,142

## Definitions
1. An oxidizing agent, especially one used to oxidize the fuel of a rocket or a fuel cell.

## Etymology
From oxidize + -er.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/oxidizer