potassium
noun
po·tas·si·um
pə-ˈta-sē-əm 
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
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It’s known as a sweet indulgence in summertime, and is a low-calorie snack ripe with nutritious value, including vitamins A and C, potassium, fiber and other plant nutrients and antioxidants.
—
Alexandra Frost, USA Today, 25 May 2026
All-Bran cereal also contains vitamin D, iron, potassium, and folic acid.
—Amber J. Tresca, Verywell Health, 25 May 2026
Leafy greens also deliver fiber, magnesium, potassium, and antioxidants—all nutrients tied to cardiovascular health.
—Lynn Andriani, Martha Stewart, 24 May 2026
Then switch to fertilizer with phosphorous and potassium to help with flowering and setting fruit.
—Kim Toscano, Southern Living, 23 May 2026
See All Example Sentences for potassium
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Alexandra Frost, USA Today, 25 May 2026
All-Bran cereal also contains vitamin D, iron, potassium, and folic acid.
—Amber J. Tresca, Verywell Health, 25 May 2026
Leafy greens also deliver fiber, magnesium, potassium, and antioxidants—all nutrients tied to cardiovascular health.
—Lynn Andriani, Martha Stewart, 24 May 2026
Then switch to fertilizer with phosphorous and potassium to help with flowering and setting fruit.
—Kim Toscano, Southern Living, 23 May 2026
See All Example Sentences for potassium
Cite this Entry
“Potassium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/potassium. Accessed 29 May. 2026.
Copy CitationKids Definition
potassium
noun
po·tas·si·um
pə-ˈtas-ē-əm
: 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
: 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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