(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 24, 2026, from http://smartdefine.org/polonium/definitions/2047094 |
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| MLA | Webster's. "polonium" 27 May 2011. Web. 24 September 2026. <http://smartdefine.org/polonium/definitions/2047094> |