tarnish


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tarnish

Surface discoloration or reduced luster of metals owing to the effect of corrosive substances or galvanic action. In dental restorations, such action may be enhanced by accumulation of bacterial plaque.

tarnish,

n 1. surface discoloration or loss of luster by metals. Under oral conditions, it often results from hard and soft deposits.
2. a chemical process by which a metal surface is discolored or its luster destroyed.
References in periodicals archive ?
0008% it may cause staining or tarnish silver, the extent of which depends upon the sulphur concentration.
As soon as viewers saw how effortlessly MAAS removed tarnish, stubborn spots, and stains from the piles of badly oxidized metals on stage--MAAS hit big time.
Debi Wechsler comments on the excitement behind the Tarnish Jewels 2011 summer collection: "This summer is all about bold colors, free-flowing lines, and uninhibited combinations that are not only modern, but also pay homage to the vintage motifs of the 1970s.
Shegerian, who has represented individuals subject to defamation throughout his career, stresses that one's private life becoming public can tarnish his or her reputation and as a result hurt his or her career.
Vivekanand Reddy, who had fallen out with Jagan earlier this year, surprised everybody when he supported Jagan and criticised some Congress leaders for conspiring to tarnish the image and the memory of his brother, Y.
As the tarnish slowly dissolves, the true metal shines through; while some medals are only silver-washed copper, others are true sterling.
GAM protests tend to tarnish the fine vencer of democratic reform that is Cerezo's firmest asset.
Firefighters themselves must heed the messages from the audit and help root out unacceptable behavior that only serves to tarnish the image of the entire department.
BAREBACKING COULD TARNISH GAY MEN'S IMAGE AMONG STRAIGHT PEOPLE-WITH DISASTROUS RESULTS
But war's realities will soon tarnish their bonhomie and change their disdain to understanding.
Eventually, they will tarnish a silver surface or pit an electronic device.
While they can burnish brands, generate awareness and open doors to consumers, blogs can also bend Web traffic, upend organic search results and tarnish a company's reputation.