1
: a silver-white soft waxy ductile element of the alkali metal group with atomic number 11 that occurs abundantly in nature in combined form and is very active chemically see Chemical Elements Table
2
: salt sense 1a, sodium chloride
—not used technically
reduced her sodium intake
a low-sodium diet
Examples of sodium in a Sentence
Recent Examples on the Web
At its supplier conference last December, CATL outlined plans to scale sodium-ion batteries across four major segments – battery swapping, passenger cars, commercial vehicles, and energy storage – by 2026, positioning the chemistry as a core pillar of its future portfolio.
—
Bojan Stojkovski, Interesting Engineering, 31 Jan. 2026
According to a study of new cereals marketed primarily to children from 2010 to 2023, fat, sodium, and sugar content increased while protein and fiber decreased.
—Nancy Lebrun, Verywell Health, 31 Jan. 2026
Geoff Scott, former head of medicine and sports science at Tottenham Hotspur, told The Athletic’s Sarah Shephard that, in hot conditions, players lose water through sweat, as well as electrolytes, and that the depletion of the likes of sodium, chloride and potassium can be significant.
—Eduardo Tansley, New York Times, 30 Jan. 2026
Alter Your Diet Healthy kidneys usually maintain the body’s fluid balance by regulating levels of sodium and other minerals.
—Carrie Madormo, Health, 30 Jan. 2026
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Bojan Stojkovski, Interesting Engineering, 31 Jan. 2026
According to a study of new cereals marketed primarily to children from 2010 to 2023, fat, sodium, and sugar content increased while protein and fiber decreased.
—Nancy Lebrun, Verywell Health, 31 Jan. 2026
Geoff Scott, former head of medicine and sports science at Tottenham Hotspur, told The Athletic’s Sarah Shephard that, in hot conditions, players lose water through sweat, as well as electrolytes, and that the depletion of the likes of sodium, chloride and potassium can be significant.
—Eduardo Tansley, New York Times, 30 Jan. 2026
Alter Your Diet Healthy kidneys usually maintain the body’s fluid balance by regulating levels of sodium and other minerals.
—Carrie Madormo, Health, 30 Jan. 2026
See All Example Sentences for sodium
Cite this Entry
“Sodium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sodium. Accessed 3 Feb. 2026.
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Medical Definition
sodium
noun
so·di·um
ˈsōd-ē-əm 
: a silver white soft waxy ductile element of the alkali metal group that occurs abundantly in nature in combined form and is very active chemically
—symbol Na
see Chemical Elements Table
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