noun, often attributive
po·​tas·​si·​um | \ pə-ˈta-sē-əm How to pronounce potassium (audio) \

Definition of potassium

: a silver-white soft light low-melting monovalent metallic element of the alkali metal group that occurs abundantly in nature especially combined in minerals — see Chemical Elements Table

Examples of potassium in a Sentence

Recent Examples on the Web Sedimentary and volcanic rock layers are interspersed, and absolute dates can often be obtained from volcanic rocks with potassium-bearing crystals. Eliot Bush, Scientific American, "The Meaning of Time in the Place where Humanity's Earliest Ancestors Arose," 27 June 2020 Technically, quinoa is a seed, and a cup of it cooked boasts 8 grams of protein and 5 grams of fiber, plus potassium and iron. Popular Science, "High-protein alternatives to meat," 17 June 2020 Blueberries are well known for their health benefits boasting lots of vitamin C and potassium. Nicole Clancy, Better Homes & Gardens, "7 of the Best Brain Foods to Improve Your Memory and Concentration," 25 June 2020 What about the need for sports drinks to replenish electrolytes like sodium and potassium after a workout? Sandee Lamotte, CNN, "Billions spent on ads encouraging minority youth to drink sugar-laden beverages despite health consequences," 23 June 2020 Right now the setup uses rubidium atoms to make the BECs, but there are plans to incorporate potassium atoms into the mix to explore the physics of mixed BECs. Jennifer Ouellette, Ars Technica, "Chilling out: Physicists create exotic “fifth form of matter” on board the ISS," 15 June 2020 The rest of honey’s chemical composition is made up of enzymes, amino acids, vitamins, calcium, iron, zinc and potassium to name a few. Miriam Fauzia, USA TODAY, "Fact check: A mix of honey and cinnamon may have some health benefits, more studies needed," 15 June 2020 Seawater is full of radioactive elements (like potassium) and bioluminescent critters, both of which can trigger sensitive optical detectors. Daniel Oberhaus, Wired, "The Hunt Is On for Elusive Ghost Particles in Antarctica," 12 June 2020 The electrical signals are sent through potassium ions, which create positive charges in the cells. Kat Eschner, Popular Science, "Teams of bacteria have working memories remarkably like ours," 29 Apr. 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'potassium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of potassium

circa 1807, in the meaning defined above

History and Etymology for potassium

New Latin, from potassa potash, from English potash

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Time Traveler for potassium

Time Traveler

The first known use of potassium was circa 1807

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Statistics for potassium

Last Updated

10 Jul 2020

Cite this Entry

“Potassium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/potassium. Accessed 12 Jul. 2020.

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More Definitions for potassium


How to pronounce potassium (audio)

English Language Learners Definition of potassium

: a soft, silver-white metal that is used especially in farming and industry


po·​tas·​si·​um | \ pə-ˈta-sē-əm How to pronounce potassium (audio) \

Kids Definition of potassium

: a silvery soft light metallic chemical element found especially in minerals


po·​tas·​si·​um | \ pə-ˈtas-ē-əm How to pronounce potassium (audio) \

Medical Definition of potassium

: a silver-white soft light low-melting monovalent metallic element of the alkali metal group that occurs abundantly in nature especially combined in minerals symbol K — see Chemical Elements Table

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More from Merriam-Webster on potassium

Spanish Central: Translation of potassium

Nglish: Translation of potassium for Spanish Speakers

Britannica English: Translation of potassium for Arabic Speakers

Britannica.com: Encyclopedia article about potassium

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