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
Milk also provides major electrolytes, including sodium and potassium, which support hydration, says Ehsani.
—
Kirsten Nunez, Martha Stewart, 4 Apr. 2026
Diet, exercise, and sodium reduction can all lower blood pressure on their own.
—Heidi Cope, Health, 3 Apr. 2026
Malone explained that high sodium intake can increase calcium loss in urine, while excessive alcohol is linked to lower bone density and a higher fracture risk.
—Hadia Zainab, CNN Money, 2 Apr. 2026
Before mixing, each perlite batch was soaked in its respective solution and then coated with sodium silicate and fly ash to encapsulate the nutrients and bacteria.
—Srishti Gupta, Interesting Engineering, 31 Mar. 2026
See All Example Sentences for sodium
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Kirsten Nunez, Martha Stewart, 4 Apr. 2026
Diet, exercise, and sodium reduction can all lower blood pressure on their own.
—Heidi Cope, Health, 3 Apr. 2026
Malone explained that high sodium intake can increase calcium loss in urine, while excessive alcohol is linked to lower bone density and a higher fracture risk.
—Hadia Zainab, CNN Money, 2 Apr. 2026
Before mixing, each perlite batch was soaked in its respective solution and then coated with sodium silicate and fly ash to encapsulate the nutrients and bacteria.
—Srishti Gupta, Interesting Engineering, 31 Mar. 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 6 Apr. 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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