Definition of meitnerium noun from the Oxford Advanced American Dictionary

 

meitnerium

 noun
noun
NAmE//maɪtˈnɛriəm//
 
, NAmE//maɪtˈnɪriəm//
 
[uncountable](symbol Mt)
 
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a radioactive chemical element. Meitnerium is produced when atoms collide (= crash into each other).
See the Oxford Advanced Learner's Dictionary entry: meitnerium