Main Entry:

po·tas·si·um

Pronunciation:

\pə-ˈta-sē-əm\

Function:

noun

Usage:

often attributive

Etymology:

New Latin, from potassa potash, from English potash

Date:

circa 1807

: a silver-white soft light low-melting monovalent metallic element of the alkali metal group that occurs abundantly in nature especially combined in minerals — see element table