sol·​u·​ble | \ ˈsäl-yə-bəl How to pronounce soluble (audio) \

Definition of soluble

1 : susceptible of being dissolved in or as if in a liquid and especially water
2 : subject to being solved or explained soluble questions

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Did You Know?

Soluble looks like a word that should be confined to chemistry labs, though it's often used by nonchemists as well to describe substances that can be dissolved in liquids. On the other hand, the sense of soluble meaning "solvable" is also quite common. In this sense, soluble, like its opposite, insoluble, is usually paired with problem. If only all life's problems were soluble by stirring them in a container filled with water.

Examples of soluble in a Sentence

Sugar is soluble in water. one murder case that proved to be soluble after all
Recent Examples on the Web But this whole grain’s true claim to nutrition fame is its fiber content, particularly, soluble fiber, which is credited with helping lower blood cholesterol levels. Darlene Zimmerman, Detroit Free Press, "Oatmeal breakfast bars are an easy grab-and-go way to break the fast," 17 Apr. 2021 In organic chemistry, alcohols tend to include hydroxyl, which contributes to making molecules soluble in water. Ashley Strickland, CNN, "The moon may contain more water than previously believed," 26 Oct. 2020 The fertilizer Lawes manufactured contained a soluble, inorganic form of phosphorus that plants can readily use. Julia Rosen, National Geographic, "Farmers are facing a phosphorus crisis. The solution starts with soil.," 14 Oct. 2020 Mix 1 tablespoon of water-soluble, 30-10-10 fertilizer with 1 gallon of water and water the plant’s soil. oregonlive, "Ask an expert: Brown tips on this healthy cypress tree are male pollen-bearing flowers," 28 Mar. 2021 Inorganic fertilizers, notably those containing high percentages of water-soluble nitrogen, could burn roots of plants. Neil Sperry, San Antonio Express-News, "Bad news for Xylosma plants: they didn't survive the freeze," 26 Mar. 2021 One of the ingredients for all of the pops was something called soluble corn fiber. Tanya Edwards, CNN Underscored, "We tried Halo Top’s new low-sugar, low-cal fruit pops, and here’s what we thought," 26 Mar. 2021 Use Osmocote and soluble fertilizer for container plants. Calvin Finch, San Antonio Express-News, "Summer flowers to plant now for nectar sources and color in your San Antonio garden," 2 Apr. 2021 Niacinamide, also known as nicotinamide, is a form of Vitamin B3 that is water-soluble, which means that it is not stored in the body and is important to replenish. Lauren Valenti, Vogue, "Everything You Need to Know About Niacinamide, Skin Care’s New Powerhouse Ingredient," 25 Mar. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'soluble.' 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 soluble

15th century, in the meaning defined at sense 1

History and Etymology for soluble

Middle English, from Anglo-French, digestible, laxative, from Late Latin solubilis, from Latin solvere to loosen, dissolve — more at solve

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Time Traveler for soluble

Time Traveler

The first known use of soluble was in the 15th century

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Statistics for soluble

Last Updated

30 Apr 2021

Cite this Entry

“Soluble.” Dictionary, Merriam-Webster, Accessed 8 May. 2021.

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More Definitions for soluble



English Language Learners Definition of soluble

: capable of being dissolved in a liquid
formal : capable of being solved or explained


sol·​u·​ble | \ ˈsäl-yə-bəl How to pronounce soluble (audio) \

Kids Definition of soluble

1 : capable of being dissolved in liquid Sugar is soluble in water.
2 : capable of being solved or explained a soluble problem


sol·​u·​ble | \ ˈsäl-yə-bəl How to pronounce soluble (audio) \

Medical Definition of soluble

1 : susceptible of being dissolved in or as if in a fluid
2 : capable of being emulsified a soluble oil

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