What does oxidizer mean?
An oxidizer is a substance or agent that causes oxidation, a chemical process in which another substance loses electrons and may combine with oxygen. Oxidizers occur in both everyday and scientific contexts: oxygen in air is an important oxidizer, while concentrated chemicals such as hydrogen peroxide can be used in industrial and laboratory work. The term is especially common when describing materials that must be protected from oxidation, such as metals vulnerable to corrosion, or when describing the deliberate use of an oxidizing agent in manufacturing. In a broad technical sense, an oxidizer accepts electrons from the substance being oxidized. The related term "oxidant" is frequently used in chemistry, while "oxidizing agent" is a more explanatory alternative. "Oxidizer" should not be confused with "oxide," which names the compound produced when oxygen combines with another element rather than the agent that causes oxidation.
nounA substance or agent that causes another substance to undergo oxidation, typically by removing electrons and increasing its oxygen content.
- A substance or agent that promotes oxidation.
"The strong oxidizer was carefully added to the solution in small quantities."
"Hydrogen peroxide is commonly used as an oxidizer in industrial and laboratory processes."
"The material is vulnerable to corrosion when exposed to a strong oxidizer."
The regular plural is used when referring to multiple oxidizing substances or agents.
"Strong oxidizers must be stored separately from combustible materials."
An oxidizer does the chemical opposite of a reducer: it makes another substance lose electrons.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does oxidizer come from?
The word "oxidizer" is formed from "oxidize" with the agentive suffix -er, meaning a person or thing that performs the stated action. It belongs to the scientific family of oxidize, oxidation, oxide, and oxygen. These words ultimately draw on Greek oxys, meaning "sharp," and gennan, meaning "to produce," in the coined term oxygenium, referring to the acid-forming element.
How oxidizer is actually used
In technical and industrial contexts, "oxidizer" is often used interchangeably with "oxidizing agent" and "oxidant." In American spelling, the final -er is pronounced /ər/; British spelling commonly uses "oxidiser."
Easily confused with oxidizer
An oxidizer causes oxidation, whereas an oxide is a compound formed by combining oxygen with another element.