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

Between 2009 and 2015, according to the city health department, there was a 6.8% reduction in sodium levels among top-selling foods. Melanie Grayce West, WSJ, "NYC Health Department to Lead National Charge to Cut Sugar Intake," 19 Oct. 2018 Nutritional analysis from Vitamix per waffle: calories 250, total fat 19g, saturated fat 9g, cholesterol 100mg, sodium 100mg,total carbohydrate 15g, dietary fiber 2g, sugars 2g, protein 7g. Debbi Snook,, "Almond Waffles With Raspberry Sauce from Vitamix (photo, recipes)," 9 May 2018 Despite their high sodium content, popcorn and peanuts are Katz’s best bets for a concession stand snack. Jenna Rennert, Vogue, "March Madness! A Pro’s Guide to the Healthiest Courtside Snacks," 18 Mar. 2019 Everyone loses different levels of sodium in their sweat. Laura Schwecherl, SELF, "The First-Time Marathoner's Guide to Fuel and Hydration for Your Marathon Training," 6 Oct. 2018 The new caramel Frappuccino recipe in a 16-ounce size, for example, contains 50 fewer calories, 18 fewer grams of sugar and 150 fewer milligrams of sodium than the original. Julie Jargon, WSJ, "Starbucks’ Frappuccino Gets a Sugar Makeover," 30 Aug. 2018 Everyone has different needs around sodium and different likes and dislikes for flavor, too. Sally Tamarkin, SELF, "22 Easy Ways to Drink More Water Every Day," 3 Jan. 2019 Without asking a single question, your doctor could chart your physical activity and check your hydration, sodium and oxygen levels without using a needle. Gary Shapiro, WSJ, "Hacking Health Care: How Tech Will Drive Down Costs," 6 Dec. 2018 The sample was also spot-on for average values of zinc and calcium, but a little high on sodium. Ezra Dyer, Popular Mechanics, "For Motor Oil, How Old Is Too Old?," 6 Dec. 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

7 Apr 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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