radioelement

[ rey-dee-oh-el-uh-muhnt ]

noun

, Chemistry.

1. a radioactive element.

radioelement

/ ˌreɪdɪəʊˈɛlɪmənt /

noun

1. an element that is naturally radioactive

Word History and Origins

Origin of radioelement¹

First recorded in 1900–05; radio- + element