Definition of berkelium noun from the Oxford Advanced American Dictionary

 

berkelium

 noun
noun
NAmE//ˈbərkliəm//
 
, NAmE//bərˈkiliəm//
 
[uncountable](symbol Bk)
 
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a chemical element. Berkelium is a radioactive metal that is produced artificially from americium and helium.
See the Oxford Advanced Learner's Dictionary entry: berkelium