contaminate

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verb con·tam·i·nate \kən-ˈta-mə-ˌnāt\

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

con·tam·i·nat·edcon·tam·i·nat·ing

Full Definition of CONTAMINATE

transitive verb

1

a :  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

— con·tam·i·na·tive \-ˌnā-tiv\ adjective

— con·tam·i·na·tor \-ˌnā-tər\ noun

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Examples of CONTAMINATE

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

Origin of CONTAMINATE

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

First Known Use: 15th century

Related to CONTAMINATE

Synonyms

befoul, defile, foul, poison, pollute, taint

Antonyms

decontaminate, purify

Related Words

infect; begrime, besmirch, blacken, dirty, foul up, grime, mire, muddy, smirch, smudge, soil, stain, sully; corrupt, rot, spoil; adulterate, doctor; dilute, water down

Near Antonyms

clarify, clean, cleanse, clear, distill (also distil), purge; filter; disinfect, sanitize, sterilize

Synonym Discussion of 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>.

Rhymes with CONTAMINATE

abbreviate, abominate, accelerate, accentuate, accommodate, acculturate, accumulate, adjudicate, adulterate, affiliate, agglomerate, alienate, alleviate, alliterate, amalgamate, ameliorate, amyl nitrate, annihilate, annunciate, anticipate, apostolate, appreciate, appropriate, approximate, arpeggiate, articulate, asphyxiate, assassinate, asseverate, assimilate, associate, at any rate, attenuate, authenticate, barbiturate, bicarbonate, calumniate, capacitate, capitulate, catholicate, certificate, coagulate, coelenterate, collaborate, commemorate, commiserate, communicate, compassionate, concatenate, conciliate, confabulate, confederate, conglomerate, congratulate, consolidate, cooperate, coordinate, corroborate, deactivate, debilitate, decapitate, decelerate, decerebrate, deconcentrate, deconsecrate, decorticate, decrepitate, de-escalate, defibrinate, defoliate, degenerate, deliberate, delineate, demodulate, denominate, depopulate, depreciate, deracinate, deregulate, desegregate, desiderate, detoxicate, devaluate, diaconate, dilapidate, discriminate, disintegrate, disseminate, dissimulate, dissociate, domesticate, effectuate, ejaculate, elaborate, electroplate, eliminate, elucidate, emaciate, emancipate, emasculate, encapsulate, enumerate, enunciate, episcopate, equivocate, eradicate, etiolate, evacuate, evaluate, evaporate, eventuate, eviscerate, exacerbate, exaggerate, exasperate, excited state, excogitate, excoriate, exfoliate, exhilarate, exonerate, expatiate, expatriate, expectorate, expostulate, expropriate, extenuate, exterminate, extrapolate, facilitate, felicitate, fish or cut bait, garrison state, gesticulate, habilitate, habituate, hallucinate, humiliate, hydrogenate, hypothecate, illuminate, impersonate, inactivate, inaugurate, incarcerate, incinerate, incorporate, incriminate, indoctrinate, inebriate, infatuate, infuriate, ingratiate, ingurgitate, initiate, inoculate, inseminate, insinuate, instantiate, intercalate, interpolate, interrelate, interrogate, intimidate, intoxicate, invalidate, investigate, invigorate, irradiate, Italianate, Korea Strait, lanceolate, legitimate, luxuriate, mandarinate, manipulate, matriarchate, matriculate, Merthiolate, necessitate, negotiate, noncandidate, obliterate, officiate, Orange Free State, orientate, originate, oxygenate, participate, particulate, patriarchate, patriciate, perambulate, peregrinate, perpetuate, pontificate, precipitate, predestinate, predominate, prefabricate, premeditate, preponderate, prevaricate, procrastinate, prognosticate, proliferate, propitiate, proportionate, quadruplicate, quintuplicate, reciprocate, recriminate, recuperate, redecorate, reduplicate, reeducate, refrigerate, regenerate, regurgitate, reincarnate, reintegrate, reiterate, rejuvenate, remunerate, repatriate, repudiate, resuscitate, retaliate, reticulate, revaluate, reverberate, scholasticate, second estate, self-flagellate, self-immolate, self-pollinate, seventy-eight, sextuplicate, Singapore Strait, sophisticate, subordinate, substantiate, syllabicate, tergiversate, transliterate, triangulate, vanity plate, variegate, vaticinate, vituperate, vociferate

contaminate

transitive verb con·tam·i·nate \kən-ˈtam-ə-ˌnāt\   (Medical Dictionary)

con·tam·i·nat·edcon·tam·i·nat·ing

Medical Definition of CONTAMINATE

1

:  to soil, stain, or infect by contact or association <bacteria contaminated the wound>

2

:  to make inferior or impure by admixture <air contaminated by sulfur dioxide>

—con·tam·i·na·tive \-ˌnāt-iv\ adjective

—con·tam·i·na·tor \-ˌnāt-ər\ noun