noun
transuranium element; superheavy element
Scientific term for elements with atomic numbers greater than 92 (uranium). Often used in physics and chemistry contexts.
超重元素の合成には加速器が使われる。
Particle accelerators are used to synthesize superheavy elements.
周期表の超重元素は非常に不安定である。
Superheavy elements on the periodic table are extremely unstable.
Synonymous with 超重元素, but explicitly includes 'uranium' in the name. Both refer to elements beyond uranium, though 超重元素 is sometimes used more narrowly for elements with very high atomic numbers.
Compound of 超 (chō, 'super-') + 重 (jū, 'heavy') + 元素 (genso, 'element'). A direct calque of the English 'superheavy element'.