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[verb kuh n-tam-uh-neyt; noun, adjective kuh n-tam-uh-nit, -neyt] /verb kənˈtæm əˌneɪt; noun, adjective kənˈtæm ə nɪt, -ˌneɪt/
verb (used with object), contaminated, contaminating.
to make impure or unsuitable by contact or mixture with something unclean, bad, etc.:
to contaminate a lake with sewage.
to render harmful or unusable by adding radioactive material to:
to contaminate a laboratory.
something that contaminates or carries contamination; contaminant.
Obsolete. contaminated.
Origin of contaminate
late Middle English
1375-1425; late Middle English contaminaten < Latin contāminātus, past participle of contāmināre to defile, spoil, equivalent to con- con- + -tāminare, verbal derivative of *tāmen something touched < *tag-s-men, equivalent to tag-, variant stem of tangere to touch + -s-men resultative noun suffix; cf. examen
Related forms
contaminable, adjective
contaminative, adjective
contaminator, noun
contaminous, adjective
noncontaminable, adjective
noncontaminative, adjective
recontaminate, verb (used with object), recontaminated, recontaminating.
self-contaminating, adjective
uncontaminable, adjective
uncontaminated, adjective
uncontaminative, adjective
1. defile, pollute, taint, infect, poison, corrupt. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for uncontaminated
Historical Examples
  • In contact with germless air the uncontaminated must never ferments.

  • "I'm glad to meet one uncontaminated American citizen in this city," he said.

    The Art of Disappearing John Talbot Smith
  • For his dreams had been of an Arabian Houri, uncontaminated by the west.

    Tartarin de Tarascon Alphonse Daudet
  • How I love them for the clean, uncontaminated body with which they blessed my spirit.

  • The love of sex for sex would have been uncontaminated and pure.

  • Yet, as to superstitions, the first uncontaminated Achaean poets must have been the purest of all.

    The World of Homer

    Andrew Lang
  • Can he now raise her to the rank of a pure and uncontaminated matron?

    The Monastery Sir Walter Scott
  • This shows that, whatever his career may have been, his heart is uncontaminated.

  • I would as soon speak of the uncontaminated spirituality of a rabbit.

  • The soul when uncontaminated informs the whole outward body.


    Henry Seward Hubbard
British Dictionary definitions for uncontaminated


not having been polluted, infected, or made impure


verb (transitive) (kənˈtæmɪˌneɪt)
to make impure, esp by touching or mixing; pollute
to make radioactive by the addition of radioactive material
adjective (kənˈtæmɪnɪt; -ˌneɪt)
(archaic) contaminated
Derived Forms
contaminable, adjective
contaminant, noun
contaminative, adjective
contaminator, noun
Word Origin
C15: from Latin contamināre to defile; related to Latin contingere to touch
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
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Word Origin and History for uncontaminated



early 15c., from Old French contaminer, from Latin contaminatus, past participle of contaminare "to defile," from contamen "contact, pollution," from com- "together" (see com-) + *tag-, base of tangere "to touch" (see tangent). Related: Contaminant (1934); contaminable.

Online Etymology Dictionary, © 2010 Douglas Harper
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uncontaminated in Medicine

contaminate con·tam·i·nate (kən-tām'ə-nāt')
v. con·tam·i·nated, con·tam·i·nat·ing, con·tam·i·nates

  1. To make impure or unclean by contact or mixture.

  2. To expose to or permeate with radioactivity.

con·tam·i·nant (-nənt) n.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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