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

hafnium

noun
 
/ˈhæfniəm/
 
/ˈhæfniəm/
[uncountable]
(symbol Hf)
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  1. a radioactive chemical element. Hafnium is a hard silver-grey metal.
    Word Origin1920s: modern Latin, from Hafnia, Latinized form of Danish Havn, former name of Copenhagen.
See hafnium in the Oxford Advanced American Dictionary
Check pronunciation: hafnium

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