oxidizer

American

[ok-si-dahy-zer] / ˈɒk sɪˌdaɪ zər /

noun

Chemistry.

oxidant.

oxidizer British

/ ˈɒksɪˌdaɪzə /

noun

an oxidant, esp a substance that combines with the fuel in a rocket engine

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

antioxidizer

noun

Etymology

Origin of oxidizer

First recorded in 1870–75; oxidize + -er ¹

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

oxidizer

Liquid-fuel rockets, on the other hand, can be cycled on and off and combine an oxidizer, like cryogenic liquid oxygen, often with liquid hydrogen.

From The Wall Street Journal ● Jun. 14, 2026

Hydroxyl plays a key role in the atmosphere as its primary oxidizer.

From Science Daily ● Apr. 21, 2026

The first attempt on Tuesday also failed because the automatic safety system registered a flaw in the oxidizer tank pressurization system, said Roscosmos head Yuri Borisov.

From Seattle Times ● Apr. 10, 2024

At around that time, a delivery driver arrived with 4,000 gallons of an unspecified oxidizer.

From Washington Times ● Dec. 30, 2023

It was an oxidizer, which, when combined with other chemicals, produced heat and gas, necessary to make a rocket fly.

From "October Sky" by Homer Hickam

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023