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Line breaks: po¦tas|sium
Pronunciation: /pəˈtasɪəm

Definition of potassium in English:


[mass noun]
The chemical element of atomic number 19, a soft silvery-white reactive metal of the alkali-metal group. (Symbol: K)
Example sentences
  • For example, lithium, sodium, and potassium comprised a triad of soft, highly reactive metals.
  • The plants are sustained by water, enriched with calcium, potassium, nitrogen and other fertilisers.
  • Its high potassium, phosphorus and calcium help maintain high energy levels.


early 19th century: from potash (earlier potass, from French potasse) + -ium.



adjective ( Mineralogy )
Example sentences
  • The Lake George center, for instance, had three emplacements, one potassic, another sodic, and yet another with a mixed composition.
  • A scintillometer could make a radiometric survey at the same time which would distinguish potassic from sodic granites.
  • Most recent studies of potassic magma generation ascribe such characteristics to metasomatized portions of the subcontinental lithosphere.

Definition of potassium in:

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