so·​di·​um | \ ˈsō-dē-əm How to pronounce sodium (audio) \

Definition of sodium

: 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 — see Chemical Elements Table

Examples of sodium in a Sentence

Recent Examples on the Web

Pick a low-sodium sauce without any added sweeteners that uses vegetables as the first ingredient. Jaclyn London, Ms, Rd, Cdn, Good Housekeeping, "The Healthiest Ways to Eat Pasta, According to a Nutritionist," 2 Nov. 2018 Try serving your fish with lemon, garlic, low-sodium soy-sauce or vinaigrette rather than a higher-calorie tartar sauce. Bianca Arney,, "Eating fish for your best health," 2 May 2018 These structures control the traffic of ions (such as sodium, potassium and calcium) in and out of the cells and neurotransmitters across the synapses—and thus the excitability of certain brain cells and brain networks. R. Allan Purdy, Scientific American, "Can Anything Stop My Migraine?," 1 May 2017 Schmidt's Naturals strives to operate with those ideas in mind: their signature natural deodorants do not contain aluminum, sodium laureth sulfates or parabens, and its glass and plastic packaging is recyclable. Meagan Fredette, Teen Vogue, "Justin Bieber Is Making His Own Deodorant With Schmidt’s Naturals," 21 May 2019 Still, soups are often high in sodium—with consumers sometimes adding their own salt too. Anne Marie Chaker, WSJ, "Put Down That Spoon—This Soup Is For Drinking," 5 Jan. 2019 Lobsters are a good source of protein but high in sodium and cholesterol. Margeaux Sippell,, "Lobsters have teeth? Yes, they do," 23 Apr. 2018 Some people with acne or acne-like rosacea symptoms may also benefit from using topical treatments containing sulfur or sodium sulfacetamide, the AAD says. A.a. Newton, SELF, "How to Tell if Your 'Acne' Might Actually Be Rosacea," 9 Apr. 2019 The city health department in 2015 introduced a sodium-warning requirement on chain-restaurant menus in New York City to indicate a highly salty dish. Melanie Grayce West, WSJ, "NYC Health Department to Lead National Charge to Cut Sugar Intake," 19 Oct. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sodium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of sodium

1807, in the meaning defined above

History and Etymology for sodium

New Latin, from English soda

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Statistics for sodium

Last Updated

16 Jun 2019

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Time Traveler for sodium

The first known use of sodium was in 1807

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More Definitions for sodium



English Language Learners Definition of sodium

: a soft silver-white element that is found in salt, baking soda, and other compounds


so·​di·​um | \ ˈsō-dē-əm How to pronounce sodium (audio) \

Kids Definition of sodium

: a soft waxy silver-white chemical element occurring in nature in combined form (as in salt)


so·​di·​um | \ ˈsōd-ē-əm How to pronounce sodium (audio) \

Medical Definition of sodium

: 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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More from Merriam-Webster on sodium

Rhyming Dictionary: Words that rhyme with sodium

Spanish Central: Translation of sodium

Nglish: Translation of sodium for Spanish Speakers

Britannica English: Translation of sodium for Arabic Speakers Encyclopedia article about sodium

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