The definition of potassium is an alkali metal.
An example of potassium is the mineral found in dried apricots and raisins.
See potassium in Webster's New World College Dictionary
noun
Origin: ModL: so named (1807) < potassa < Du potasch, potash, by Humphrey Sir Humphry Davy, who first isolated it from potash
Related Forms:
See potassium in American Heritage Dictionary 4
noun Symbol K
Origin:
Origin: From potash (from which it was first obtained)
.Related Forms:
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