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- (chemistry) A soft, waxy, silvery reactive metal that is never found unbound in nature; an element (symbol K) with an atomic number of 19 and atomic weight of 39.0983. The symbol is derived from the Latin kalium.
- Potassa and Potassium in the Webster's New Collegiate Dictionary, Merriam-Webster, 1974 edition.
For etymology and more information refer to: http://elements.vanderkrogt.net/elem/be.html (A lot of the translations were taken from that site with permission from the author)
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