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Definition of Radon
1. 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.
Exact synonyms: Atomic Number 86, Rn
Generic synonyms: Chemical Element, Element, Argonon, Inert Gas, Noble Gas
Generic synonyms: Chemical Element, Element, Argonon, Inert Gas, Noble Gas
Definition of Radon
1. Noun. A radioactive chemical element (''symbol'' Rn, ''formerly'' Ro) with atomic number 86, one of the noble gases. ¹
¹ Source: wiktionary.com
Definition of Radon
1. a radioactive element [n -S]
Medical Definition of Radon
1. A radioactive element formed as a gas during the breakdown of radium. (12 Dec 1998)
Lexicographical Neighbors of Radon
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