noun, often attributive
po·​tas·​si·​um | \pə-ˈta-sē-əm \

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

As a result of the mix-up, the potential side effects of losartan include kidney dysfunction, high potassium levels, and low blood pressure. Sarah Jacoby, SELF, "The FDA Just Recalled Montelukast Pills for a Dangerous Labeling Mistake," 4 Sep. 2018 The machines’ metal teeth gouge into the rock—a mix of red potassium salts, white sodium chloride, better known as table salt, and gray clay. James Marson, WSJ, "More Potash Coming to an Already Crowded Fertilizer Market," 29 July 2018 Usually the nurses administer a version of the Myers Cocktail, a mix of B and C vitamins, potassium, magnesium, calcium, and amino acids delivered with an intravenous needle. Jamie Rosen, Town & Country, "Is the Wellness IV the Next Big Thing in Beauty?," 15 Aug. 2018 Other potassium-containing foods include oranges, tomatoes, leafy greens and some salt substitutes (check the label). Richard A. Marini, San Antonio Express-News, "6 foods to avoid if you’re taking these prescription drugs," 6 Mar. 2018 For example: In traditional farming, plants derive phosphorus, nitrogen, and potassium from the soil. Lina Zeldovich, Popular Mechanics, "The Vertical Farm That Lifted a Family," 2 June 2016 The discovery led him to conclude that an enzyme in the body serves as a kind of pump that regulates the amount of potassium and sodium ions inside cells. Katie Thomas, BostonGlobe.com, "Jens Christian Skou, 99, Nobel recipient in chemistry," 4 June 2018 Asparagus Asparagus is rich in potassium, folate, vitamin A, vitamin K, and fiber. Aarti Sanan, Redbook, "Wedding Dress Challenge: Time for Super Foods," 21 Mar. 2012 Hard to find in a convenient drinkable juice form on these shores, mangosteen is known for its rich potassium, manganese and magnesium content. Kavita Daswani, latimes.com, "Fourth of July BBQ draaaanks that won't blow your diet," 29 June 2018

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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Statistics for potassium

Last Updated

30 Nov 2018

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Time Traveler for potassium

The first known use of potassium was circa 1807

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More Definitions for potassium



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 \

Kids Definition of potassium

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


po·​tas·​si·​um | \pə-ˈtas-ē-əm \

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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living or existing for a long time

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