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
Salt Substitutes Salt substitutes, such as potassium salts, are used to decrease sodium intake from table salt.
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Merve Ceylan, Health, 14 Apr. 2025
It’s already known that sodium channels play a critical role in the generation and conduction of nerve impulses that carry pain signals along a neuron’s membrane.
—New Atlas, 9 Apr. 2025
Salty nuts lead to dehydration and excess sodium in the body.
—Faye Remedios, Glamour, 9 Apr. 2025
After reviewing the labels, the company found that the Habanero Buffalo Sauce may contain undeclared sulfites since the sriracha sauce contains sodium bisulfite as a preservative.
—Saleen Martin, USA Today, 7 Apr. 2025
See All Example Sentences for sodium
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Merve Ceylan, Health, 14 Apr. 2025
It’s already known that sodium channels play a critical role in the generation and conduction of nerve impulses that carry pain signals along a neuron’s membrane.
—New Atlas, 9 Apr. 2025
Salty nuts lead to dehydration and excess sodium in the body.
—Faye Remedios, Glamour, 9 Apr. 2025
After reviewing the labels, the company found that the Habanero Buffalo Sauce may contain undeclared sulfites since the sriracha sauce contains sodium bisulfite as a preservative.
—Saleen Martin, USA Today, 7 Apr. 2025
See All Example Sentences for sodium
Cite this Entry
“Sodium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sodium. Accessed 21 Apr. 2025.
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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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