Element
Radon
Radon noun - A radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health.
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Speculation as to why it was changed includes confusion with the element radon and a conflict with the name of a British brand of soap; nobody's exactly sure why.
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Radon and Element. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/element/radon
Element & Radon. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/element/radon>.
Radon or Element. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/element/radon.
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