Definition of berkelium noun from the Oxford Advanced Learner's Dictionary

 

berkelium

 noun
noun
BrE BrE//bɜːˈkiːliəm//
 
, BrE//ˈbɜːkliəm//
 
; NAmE NAmE//ˈbɜːrkliəm//
 
[uncountable](symbol Bk)
 
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a chemical element. Berkelium is a radioactive metal that is produced artificially from americium and helium. Word Origin 1949: from Berkeley, a city in western California, USA (where it was first made) + -ium.
See the Oxford Advanced American Dictionary entry: berkelium