transuranium element
(dated) A surname.
(chiefly US) Alternative spelling of archaeologist
A surname.
(chemistry) Any synthetic element having an atomic number greater than that of uranium.
研究者たちは、ミリ秒以内に崩壊するウランより原子番号の大きい新たな人工元素を合成し、核化学の限界を押し広げました。
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