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contaminate

American  
[kuhn-tam-uh-neyt, kuhn-tam-uh-nit, -neyt] / kənˈtæm əˌneɪt, kənˈtæm ə nɪt, -ˌneɪt /

verb (used with object)

contaminated, contaminating
  1. to make impure or unsuitable by contact or mixture with something unclean, bad, etc..

    to contaminate a lake with sewage.

    Synonyms:
    corrupt, poison, infect, taint, pollute, defile
  2. to render harmful or unusable by adding radioactive material to.

    to contaminate a laboratory.


noun

  1. something that contaminates or carries contamination; contaminant.

adjective

  1. Obsolete. contaminated.

contaminate British  

verb

  1. to make impure, esp by touching or mixing; pollute

  2. to make radioactive by the addition of radioactive material

"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

adjective

  1. archaic contaminated

"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

Other Word Forms

Etymology

Origin of contaminate

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

Explanation

The verb contaminate means the same as pollute. Whether it’s food, air, or water, when you contaminate something, you make it impure or hazardous. Contaminate comes from the Latin word contaminat-, meaning “made impure.” You can use the word to indicate that a hazardous substance has been introduced into something else, such as food that is contaminated with mold. It can also be used figuratively to describe the spoiling of a good thing, like one person's habit of gossiping that can contaminate a conversation among friends.

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Vocabulary lists containing contaminate

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Contaminate and infect refer to something evil that deeply pervades and permeates, as the human body or mind.

From English Synonyms and Antonyms With Notes on the Correct Use of Prepositions by Fernald, James Champlin

What! shall one of us, That struck the foremost man of all this world, But for supporting robbers;—shall we now Contaminate our fingers with base bribes?

From Handy Dictionary of Poetical Quotations by Various

Shall one of Vs, That strucke the Formost man of all this World, But for supporting Robbers: shall we now, Contaminate our fingers, with base Bribes?

From Julius Caesar by Shakespeare, William

Contaminate, kon-tam′i-nāt, v.t. to defile by touching or mixing with: to pollute: to corrupt: to infect.—adj.

From Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) by Various

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