potassium
B2Substantiv/US /pətˈæsiːəm/ pət-ĂS-ē-əm; UK /pətˈæsiːəm/ pət-ĂS-ē-əm/
An Alkali element, occurring abundantly but always combined, as in the chloride, sulphate, carbonate, or silicate, in the minerals sylvite, kainite, orthoclase, muscovite, etc.
