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oxidizer

American  
[ok-si-dahy-zer] / ˈɒk sɪˌdaɪ zər /

noun

Chemistry.
  1. oxidant.


oxidizer British  
/ ˈɒksɪˌdaɪzə /

noun

  1. 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

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:

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

City officials said the process of delivering the oxidizer sparked the explosions.

From Washington Times Dec. 30, 2023

At Sohae's main launch pad, crews appear to have completed modifications to the gantry tower, while work continues on a storage for fuel and oxidizer.

From Reuters May 25, 2023

A rocket solves this problem by carrying everything it needs with it, not only fuel but also the oxidizer needed to mix with the fuel and cause it to burn.

From "Flying to the Moon: An Astronaut's Story" by Michael Collins

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