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

 

californium

 noun
noun
BrE BrE//ˌkælɪˈfɔːniəm//
 
; NAmE NAmE//ˌkælɪˈfɔːrniəm//
 
[uncountable] (symbol Cf)
 
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a chemical element. Californium is a radioactive metal produced artificially with curium or americium. Word Origin 1950s: named after California University (where it was first made) + -ium.
See the Oxford Advanced American Dictionary entry: californium