English word radon comes from English emanation
| Dictionary entry | Language | Definition |
|---|---|---|
| emanation | English (eng) | (uncountable, obsolete, chemistry) The element radon.. That which issues, flows, or proceeds from any object as a source; efflux; an effluence.. The act of flowing or proceeding from a fountain head or origin. |
| radon | English (eng) | A radioactive chemical element (symbol Rn, formerly Ro) with atomic number 86, one of the noble gases.. The most stable isotope of this element, 22286Rn. |