(n.) An Alkali element, occurring abundantly but always combined, as in the chloride, sulphate, carbonate or silicate, in the minerals sylvite, kainite, orthoclase, muscovite, etc. Atomic weight 39.0. Symbol K (Kalium).
Webster's Revised Unabridged Dictionary
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| MLA | Webster's. "potassium" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/potassium/definitions/2047930> |