[ ok-si-dey-shuh n ]
/ ɒk sɪˈdeɪ ʃən /

noun Chemistry.

the process or result of oxidizing.
the deposit that forms on the surface of a metal as it oxidizes.
Also ox·i·di·za·tion [ok-si-duh-zey-shuh n] /ˌɒk sɪ dəˈzeɪ ʃən/.

Origin of oxidation

First recorded in 1785–95; oxide + -ation
Related forms
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for oxidative

  • But this entire field of study is new, and oxidative stress is not clearly linked to aging or cell damage (see here).

  • Leonardo Nogueira et al., "Epicatechin Enhances Fatigue Resistance and Oxidative Capacity in Mouse Muscle."

    15 Shocking Exercise Facts|Anneli Rufus|August 20, 2011|DAILY BEAST
  • This measurement represents the basal metabolism of a man at complete rest, when his oxidative activities are at their lowest ebb.

    Food in War Time|Graham Lusk
  • In this regard rapidity of desiccation and subsequent protection from oxidative processes are important factors.

    Scurvy Past and Present|Alfred Fabian Hess

British Dictionary definitions for oxidative


/ (ˌɒksɪˈdeɪʃən) /


  1. the act or process of oxidizing
  2. (as modifier)an oxidation state; an oxidation potential
Derived Formsoxidational, adjectiveoxidative, adjective
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

Word Origin and History for oxidative



1791, from French oxidation (1787), coined by G. de Morveau and A. Lavoisier, noun of action from oxider "oxidize," from oxide (see oxide).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for oxidative (1 of 2)


[ ŏksĭ-dā′tĭv ]


Of, relating to, or characterized by oxidation.

Medicine definitions for oxidative (2 of 2)


[ ŏk′sĭ-dāshən ]


The combination of a substance with oxygen.
A reaction in which the atoms in an element lose electrons and the valence of the element is correspondingly increased.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for oxidative


[ ŏk′sĭ-dāshən ]

The chemical combination of a substance with oxygen.
A chemical reaction in which an atom or ion loses electrons, thus undergoing an increase in valence. Removing an electron from an iron atom having a valence of +2 changes the valence to +3. Compare reduction.
Related formsoxidative adjective
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Culture definitions for oxidative


Any chemical reaction in which a material gives up electrons, as when the material combines with oxygen. Burning is an example of rapid oxidation; rusting is an example of slow oxidation. (See combustion and reduction.)

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.