Definition of chromium noun from the Oxford Advanced American Dictionary

 

chromium

 noun
noun
NAmE//ˈkroʊmiəm//
 
[uncountable](symbol Cr)
 
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a chemical element. Chromium is a hard gray metal that shines brightly when polished and is often used to cover other metals in order to prevent them from rusting chromium-plated steel
See the Oxford Advanced Learner's Dictionary entry: chromium

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