potassium

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Pronunciation

/pəˈtæsiəm/

See all 2 pronunciations

/pəˈtæsiəm/ · /pɵˈʈæʃɪəm/

Definition of potassium

2 senses · 1 part of speech · etymology included

noun

(uncountable, usually)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.

“We all need potassium, and green vegetables are a good source.”

See all 2 definitions

noun

(uncountable, usually)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.

“We all need potassium, and green vegetables are a good source.”
(countable, usually)A single atom of this element.

“This reaction substitutes a potassium for a sodium.”

Definitions from Wiktionary, CC BY-SA.

Coined by British chemist Humphry Davy in 1807, from potassa (a Latinized form of potash) + -ium.

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