What's the difference between contaminate and tarnish?

Contaminate


Definition:

  • (v. t.) To soil, stain, or corrupt by contact; to tarnish; to sully; to taint; to pollute; to defile.
  • (a.) Contaminated; defiled; polluted; tainted.

Example Sentences:

  • (1) As the percentage of rabbit feed is very small compared to the bulk of animal feeds, there is a fair chance that rabbit feed will be contaminated with constituents (additives) of batches previously prepared for other animals.
  • (2) These results indicate that HBV markers in cord blood are either false-positive or due to contamination by maternal blood rather than an indication of in utero infection.
  • (3) There have been numerous documented cases of people being forced to seek hospital treatment after eating meat contaminated with high concentrations of clenbuterol.
  • (4) External exposures to a contaminated fishing net and fishing boat are considered pathways for fishermen.
  • (5) Comprehensive regulations are being developed to limit human exposure to contamination in drinking water by the United States Environmental Protection Agency (EPA) under the authority of the Safe Drinking Water Act (SDWA).
  • (6) In South Africa, health risks associated with exposure to toxic waste sites need to be viewed in the context of current community health concerns, competing causes of disease and ill-health, and the relative lack of knowledge about environmental contamination and associated health effects.
  • (7) The inhibitory effect was not due to contaminating rT3 in the liver homogenates.
  • (8) With an increased quantity o blood per taking by blood bactericidia a decreased contamination rate is to be expected.
  • (9) The behaviour of the enzyme from Candida utilis and from Baker's yeast on columns of these and of Blue Sepharose CL-6B was examined, together with the behaviour of the contaminating enzyme, ribulose 5-phosphate 3-epimerase (EC 5.1.3.1).
  • (10) The mining activity does not seem to have contaminated drinking water significantly.
  • (11) Furthermore, Methylene Blue contamination of the standard stain increased the rate of error in image analysis of white blood cell nuclei due to variations of staining intensity.
  • (12) Careless Herbicidal aerial spray of a field for weed control and defoliation of cotton before machine picking, resulted in the contamination of an adjoining reservoir, killing large volume of fish.
  • (13) Whereas the untreated Rhodobacter growth medium was contaminated with 1.2 ppb Mo, as analyzed by inductively coupled plasma mass spectrometry (ICP-MS), the activated carbon-treated medium was below the ICP-MS detection limit (less than 0.05 ppb).
  • (14) Released aggregates of the 19.6-kDa protein were removed from suspension by ultracentrifugation and separated from contaminating membranes by washing in 1.0% sodium dodecyl sulfate (SDS).
  • (15) The effect was shown to be due to caldesmon and not to a trace contaminant by its full reversibility after addition of a monospecific caldesmon antibody.
  • (16) On day 7, washes were collected as on day 0, and a collar was attached to the neck to prevent contamination from saliva.
  • (17) The continued expression was not due to the presence of antigen or of contaminating lymphocytes.
  • (18) Both techniques are used by industry and regulatory agencies to monitor levels of fungal contamination at various stages of food handling, storing, processing and marketing.
  • (19) In all iodine-deficient regions such as the GDR, a frequent occurrence of thyroid autonomy with manifestation of hyperthyroidism following iodine contamination has to be taken into account.
  • (20) The differences in the microbial contamination of air between the two buildings was the result of reconstructions concerning the ventilation system as well as of making it more effective.

Tarnish


Definition:

  • (a.) To soil, or change the appearance of, especially by an alternation induced by the air, or by dust, or the like; to diminish, dull, or destroy the luster of; to sully; as, to tarnish a metal; to tarnish gilding; to tarnish the purity of color.
  • (v. i.) To lose luster; to become dull; as, gilding will tarnish in a foul air.
  • (n.) The quality or state of being tarnished; stain; soil; blemish.
  • (n.) A thin film on the surface of a metal, usually due to a slight alteration of the original color; as, the steel tarnish in columbite.

Example Sentences:

  • (1) 'Devastated' Peter Greste calls on Egypt's president to pardon trio Read more “It’s ironic that the conviction was for tarnishing Egypt’s reputation when ... this [case] is what’s tarnished Egypt’s image,” Clooney told BBC News.
  • (2) He used the pre-recorded speech to deny accusations of embezzlement, saying: "They aim to tarnish my reputation and discredit my integrity, my stance, my political and military history during which I worked hard for Egypt and its people in peace and war."
  • (3) After heat treatment, the test piece was examined for compressive strength, compressive shrinkage, hardness, tarnishing and difference in phase.
  • (4) It is little wonder therefore that the circumstances around its death immediately prompted Westminster speculation that the announcement had simply been rushed forward from after the Easter recess in order to put some political punch back into the prime minister's tarnished anti-Ukip immigration initiative.
  • (5) Like many in Abbottabad, Abbasi believes the town has been unfairly tarnished by its association with a terrorist mastermind who lived undetected just a short distance from Pakistan's elite military training school.
  • (6) Paris police launch inquiry after Chelsea fans seen abusing black man on film Read more Handing down the orders at Stratford magistrates court on Wednesday, he said it was a racist incident that tarnished English football.
  • (7) And each of these groups is giving Clinton, or whoever emerges as the Democratic candidate for the 2016 White House race, at least a two-to-one advantage over a Republican party whose brand has been badly tarnished.
  • (8) The heavy price of Goldsmith’s shameless attempts to tarnish a liberal Muslim is that it will become harder, not easier, for Asians to call out unacceptable practices in their own communities.
  • (9) For the 32-month period these prostheses have been in use, no tissue reaction, tarnish, or corrosion had been observed.
  • (10) A conservative, lower-middle-class district bordering the Golden Horn and predominantly inhabited by Turks from the Black Sea coast, Kasimpasa loves Recep Tayyip Erdogan, the powerful prime minister increasingly reviled across Turkey and tarnished internationally.
  • (11) Anglo-Russian relations remain tarnished by the murder of British citizen and Putin critic Alexander Litvinenko in London in 2006 with a radioactive isotope.
  • (12) A tarnished airline brand coupled with weak finances can spell doom.
  • (13) That did not work out, but such mis-steps don’t seem to have tarnished the rapper’s brand.
  • (14) Meanwhile, the symbols of their adopted country’s world-beating prowess, from football to cars, look somewhat tarnished.
  • (15) He said it was a racist incident that tarnished English football.
  • (16) The true value of these celebrity paintings: like Picasso's Child with a Dove , which left Britain when the Qatar royal family bought it for £50m, is tarnished by massive sums.
  • (17) The alloys which had a high atomic ratio of Au + Pt + Pd + In + Zn to Ag had higher tarnish resistance.
  • (18) The legacy of this side cannot be tarnished, but for the first real time under Guardiola, they are under threat.
  • (19) Polls over the last year showed Chicagoans growing dissatisfied with Emanuel, with the star power that helped him return to Chicago and become mayor clearly tarnished.
  • (20) Is there any chance the Israelis will let us through, and repair their tarnished reputation?