transuranic element

American

[trans-yoo-ran-ik, tranz-, trans-, tranz-] / ˈtræns jʊˈræn ɪk, ˈtrænz-, ˌtræns-, ˌtrænz- /

Also transuranium element

noun

Chemistry, Physics.

any element having an atomic number greater than 92, the atomic number of uranium. All such elements are radioactive and can be synthesized by bombarding a heavy element with a light particle or element.

First recorded in 1930–35; trans- + uran(ium) + -ic

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transuranic element

Its basis is a transuranic element, which is, however, only slightly radioactive.

From The Year When Stardust Fell by Raymond F. Jones

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023