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| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| electroplating (ĭ-lěk'trō-plā'tĭng) Pronunciation Key
The process of coating the surface of a conducting material with a metal. During the process, the surface to be covered acts as a cathode in an electrolytic cell, and the metal that is to cover it acts as an anode. Electroplating is usually used to cover a less expensive metal with a more expensive metal, or to cover a corrosive metal with a less corrosive or noncorrosive metal. |
A process whereby a thin coat of metal is applied to a material. The process involves placing the material to be coated in a solution containing ions of the metal and then passing an electric current through the system, which causes the ions to adhere to the material.