verb (used with object), ox·i·dized, ox·i·diz·ing.

to convert (an element) into an oxide; combine with oxygen.
to cover with a coating of oxide or rust.
to take away hydrogen, as by the action of oxygen; add oxygen or any nonmetal.
to remove electrons from (an atom or molecule), thereby increasing the valence.Compare reduce(def 12).

verb (used without object), ox·i·dized, ox·i·diz·ing.

to become oxidized.
(especially of white wine) to lose freshness after prolonged exposure to air and often to darken in color.

Also especially British, ox·i·dise.

Origin of oxidize

First recorded in 1795–1805; oxide + -ize
Related formsox·i·diz·a·ble, ox·i·da·ble [ok-si-duh-buh l] /ˈɒk sɪ də bəl/, adjectiveox·i·diz·a·bil·i·ty, nounan·ti·ox·i·diz·ing, adjectivehalf-ox·i·dized, adjectivenon·ox·i·diz·a·ble, adjectivenon·ox·i·diz·ing, adjectiveo·ver·ox·i·dize, verb o·ver·ox·i·dized, o·ver·ox·i·diz·ing.re·ox·i·dize, verb, re·ox·i·dized, re·ox·i·diz·ing.un·der·ox·i·dize, verb (used with object), un·der·ox·i·dized, un·der·ox·i·diz·ing.un·ox·i·diz·a·ble, adjectiveun·ox·i·dized, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for oxidized

heat, burn, rust, corrode

Examples from the Web for oxidized

Contemporary Examples of oxidized

Historical Examples of oxidized

  • When they are burnt, or oxidized, they become almost harmless.

    A Handbook of Health

    Woods Hutchinson

  • The yarn must be oxidized by exposure to the air for the same length of time as dipped.

    Vegetable Dyes

    Ethel M. Mairet

  • The manganese ores are mined principally in the oxidized zone.

  • If the mission effect is desired, an oxidized or copper sash should be used.

    Mission Furniture

    H. H. Windsor

  • This outcrop is oxidized, and being free, is easily amalgamated with mercury.

    An African Adventure

    Isaac F. Marcosson

British Dictionary definitions for oxidized




to undergo or cause to undergo a chemical reaction with oxygen, as in formation of an oxide
to form or cause to form a layer of metal oxide, as in rusting
to lose or cause to lose hydrogen atoms
to undergo or cause to undergo a decrease in the number of electronsCompare reduce (def. 12c)
Derived Formsoxidization or oxidisation, noun
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 oxidized



1802 (implied in oxidizable), from oxide + -ize. Related: Oxidized; oxidizing; oxidization.

Online Etymology Dictionary, © 2010 Douglas Harper

oxidized in Medicine




To combine with oxygen; change into an oxide.
To increase the positive charge or valence of an element by removing electrons.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

oxidized in Science



To undergo or cause to undergo oxidation.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.