• synonyms


verb (used with object), ox·i·dized, ox·i·diz·ing.
  1. to convert (an element) into an oxide; combine with oxygen.
  2. to cover with a coating of oxide or rust.
  3. to take away hydrogen, as by the action of oxygen; add oxygen or any nonmetal.
  4. to remove electrons from (an atom or molecule), thereby increasing the valence.Compare reduce(def 12).
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verb (used without object), ox·i·dized, ox·i·diz·ing.
  1. to become oxidized.
  2. (especially of white wine) to lose freshness after prolonged exposure to air and often to darken in color.
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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. 2018

Examples from the Web for unoxidized

Historical Examples of unoxidized

  • The unoxidized minute traces of sugar signified imperfect combustion.

    Schenk's Theory: The Determination of Sex

    Samuel Leopold Schenk

  • Deeper down in the earth comes the unoxidized zone which continues indefinitely.

    An African Adventure

    Isaac F. Marcosson

  • It is only the unoxidized pale greenish stuff that can act as the dye, the dark brown itself has no affinity for the wool.

    Vegetable Dyes

    Ethel M. Mairet

  • In calculating the available energy, correction is made for the unoxidized residue, as urea and allied forms.

British Dictionary definitions for unoxidized



  1. to undergo or cause to undergo a chemical reaction with oxygen, as in formation of an oxide
  2. to form or cause to form a layer of metal oxide, as in rusting
  3. to lose or cause to lose hydrogen atoms
  4. to undergo or cause to undergo a decrease in the number of electronsCompare reduce (def. 12c)
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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 unoxidized



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

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Online Etymology Dictionary, © 2010 Douglas Harper

unoxidized in Medicine


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

unoxidized in Science


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