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radioelement

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

noun

Chemistry.
  1. a radioactive element.


radioelement British  
/ ˌreɪdɪəʊˈɛlɪmənt /

noun

  1. 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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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 Literature