(n.) A supposed new element, a radioactive substance discovered by M. and MMe. Curie in pitchblende. It is closely related chemically to bismuth. It emits only alpha rays and is perhaps identical with radium F.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). Polonium. Retrieved September 25, 2026, from http://smartdefine.org/polonium/definitions/2047094 |
| Chicago | Webster's. 2011. "Polonium" http://smartdefine.org/polonium/definitions/2047094 (accessed September 25, 2026). |
| Harvard | Webster's 2011, Polonium, Smart Define, viewed 25 September, 2026, <http://smartdefine.org/polonium/definitions/2047094>. |
| MLA | Webster's. "Polonium" 27 May 2011. Web. 25 September 2026. <http://smartdefine.org/polonium/definitions/2047094> |