potassium

noun

po·​tas·​si·​um pə-ˈta-sē-əm How to pronounce potassium (audio)
often attributive
: 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
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Black Bean Salad Black beans are high in fiber, potassium, and magnesium. Jillian Kubala, Health, 16 June 2025 Saltwater is also rich in minerals like magnesium, potassium, and calcium, which can help soothe muscles, support skin health, and promote relaxation. Rebecca Ann Hughes, Forbes.com, 16 June 2025 Hartford Courant There are other factors that can affect calcium uptake by the plant, such as high concentrations of ammonium, potassium, and magnesium in the soil. Nora Doonan, Hartford Courant, 14 June 2025 It’s packed with essential nutrients like vitamin K, potassium, and folate, as well as a variety of antioxidants. Angela Haupt, Time, 13 June 2025 See All Example Sentences for potassium

Word History

Etymology

New Latin, from potassa potash, from English potash

First Known Use

circa 1807, in the meaning defined above

Time Traveler
The first known use of potassium was circa 1807

Cite this Entry

“Potassium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/potassium. Accessed 20 Jun. 2025.

Kids Definition

potassium

noun
po·​tas·​si·​um pə-ˈtas-ē-əm How to pronounce potassium (audio)
: a silver-white soft light metallic element that has a low melting point and occurs abundantly in nature especially combined in minerals see element

Medical Definition

potassium

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

More from Merriam-Webster on potassium

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