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radioelement

American

[ray-dee-oh-el-uh-muhnt] / ˌreɪ di oʊˈɛl ə mənt /

noun

Chemistry.

a radioactive element.

radioelement British

/ ˌreɪdɪəʊˈɛlɪmənt /

noun

an element that is naturally radioactive

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of radioelement

First recorded in 1900–05; radio- + element

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radioelement

The discovery thrilled physicists around the world, not least Marie Curie, to whose deathbed the Joliots brought a test tube of the first artificially produced radioelement.

From "Big Science" by Michael Hiltzik

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