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meitnerium

noun
/maɪtˈnɪəriəm/
/maɪtˈnɪriəm/
[uncountable]
(symbol Mt)
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  1. a radioactive chemical element. Meitnerium is produced when atoms crash into each other.䥑(放射性化学元素)
    Word Origin1990s: modern Latin, from the name of L. Meitner (1878-1968), Austrian-born Swedish physicist.

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