Potassium
/pəˈtæsiəm/
Listen pronunciation
Definition
(noun) A soft, waxy, silvery reactive metal that is never found unbound in nature; an element with atomic number 19 and atomic weight of 39.0983.
Sentence Examples
Berries are high in minerals such as potassium.
Lithium, sodium, potassium, rubidium, caesium and francium are alkali metals.
CEFR Practice Quiz
Bananas are a well-known source of ____, an essential mineral for heart and muscle function.