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.

A surname from German.

(mineralogy) A fossil resin (chemically, a mixture of diterpene hydrocarbons) resembling amber

(pathology) The branch of pathology that deals with meteoropathies