1 contaminate | Definition of contaminate

contaminate

verb
conĀ·​tamĀ·​iĀ·​nate | \ kən-Ėˆta-mə-ĖŒnāt How to pronounce contaminate (audio) \
contaminated; contaminating

Definition of contaminate

transitive verb

1a : to soil, stain, corrupt, or infect by contact or association Bacteria contaminated the wound.
b : to make inferior or impure by admixture iron contaminated with phosphorus
2 : to make unfit for use by the introduction of unwholesome or undesirable elements water contaminated by sewage

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Other Words from contaminate

contaminative \ kən-​Ėˆta-​mə-​ĖŒnā-​tiv How to pronounce contaminative (audio) \ adjective
contaminator \ kən-​Ėˆta-​mə-​ĖŒnā-​tər How to pronounce contaminator (audio) \ noun

Synonyms & Antonyms for contaminate

Synonyms

befoul, defile, foul, poison, pollute, taint

Antonyms

decontaminate, purify

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Choose the Right Synonym for contaminate

contaminate, taint, pollute, defile mean to make impure or unclean. contaminate implies intrusion of or contact with dirt or foulness from an outside source. water contaminated by industrial wastes taint stresses the loss of purity or cleanliness that follows contamination. tainted meat a politician's tainted reputation pollute, sometimes interchangeable with contaminate, distinctively may imply that the process which begins with contamination is complete and that what was pure or clean has been made foul, poisoned, or filthy. the polluted waters of the river defile implies befouling of what could or should have been kept clean and pure or held sacred and commonly suggests violation or desecration. defile a hero's memory with slanderous innuendo

Examples of contaminate in a Sentence

Be careful not to allow bacteria to contaminate the wound. Don't touch the microchip or the oil on your hands will contaminate it. Make sure the white paint is not contaminated by any of the other colors.
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Recent Examples on the Web

Village officials said that the water supply is not contaminated and confirmed that no further precautions are in place for residents. Maia Anderson, chicagotribune.com, "Barrington officials take precautions after chlorine leak discovered at water treatment plant," 26 Aug. 2019 The announcement comes weeks after officials in New Jersey's largest city said that the drinking water was contaminated with elevated levels of lead. Eric Levenson, CNN, "Newark is getting a $120 million loan to fix its water crisis in the next 2-3 years," 26 Aug. 2019 The company bought the former UConn property from the state in 2018, spending $5.2 million on the site, which is contaminated with toxic PCBs and asbestos. Emily Brindley, courant.com, "Weeks after unveiling the concept for a West Hartford ā€˜Fintech Village,ā€™ Ideanomics still hasnā€™t filed formal design plans," 8 Aug. 2019 But since the oceans are increasingly contaminated with plastic debrisā€”8 to 9 million tons added every yearā€”the adults mistakenly feed plastic bottle tops and other plastic fragments to their young. Stephen Leahy, National Geographic, "Seabirds that eat plasticā€”and liveā€”have major health problems," 2 Aug. 2019 Girardi said some people donā€™t break down cardboard boxes as they are instructed to do to save space, while others combine recyclables with garbage, contaminating and ruining the recyclables. cleveland.com, "Pepper Pike seeks to resolve city hall garbage drop-off problem," 22 Aug. 2019 At the beginning of August a listeria outbreak in the UK killed six people who had eaten contaminated hospital food. Jack Guy, CNN, "Listeria outbreak infects 175 people during peak tourist season in Spain," 22 Aug. 2019 After discovering its well was contaminated last year, the school has now hooked up to the village of Lannon's municipal water system. Alec Johnson, Milwaukee Journal Sentinel, "E. coli and coliform bacteria were found in Lannon Elementary's well. Here's what the district did.," 20 Aug. 2019 Apparatus bays will include diesel exhaust capture devices so exhaust does not contaminate common and sleeping areas of the station. Karen Zurawski, Houston Chronicle, "Sept. 1, 2020 anticipated opening date for HCESD No. 48 fire station," 19 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'contaminate.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of contaminate

15th century, in the meaning defined at sense 1a

History and Etymology for contaminate

Middle English, from Latin contaminatus, past participle of contaminare; akin to Latin contingere to have contact with ā€” more at contingent

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More Definitions for contaminate

contaminate

verb

English Language Learners Definition of contaminate

: to make (something) dangerous, dirty, or impure by adding something harmful or undesirable to it

contaminate

verb
conĀ·​tamĀ·​iĀ·​nate | \ kən-Ėˆta-mə-ĖŒnāt How to pronounce contaminate (audio) \
contaminated; contaminating

Kids Definition of contaminate

1 : to soil, stain, or infect by contact or association The wound was contaminated by bacteria.
2 : to make unfit for use by adding something harmful or unpleasant The water is contaminated with chemicals.

contaminate

transitive verb
conĀ·​tamĀ·​iĀ·​nate | \ kən-Ėˆtam-ə-ĖŒnāt How to pronounce contaminate (audio) \
contaminated; contaminating

Medical Definition of contaminate

1 : to soil, stain, or infect by contact or association bacteria contaminated the wound
2 : to make unfit for use by the introduction of unwholesome or undesirable elements water contaminated by sewage