soluble

adjective

sol·​u·​ble ˈsäl-yə-bəl 

1

: susceptible of being dissolved in or as if in a liquid and especially water

2

: subject to being solved or explained

soluble questions

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.

Synonyms of soluble

• resolvable
• answerable
• feasible
• solvable

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

Chia pudding can support steady blood sugar thanks to its soluble fiber and healthy fats. —Caitlin Beale, Health, 22 Apr. 2026

Barley Barley contains a soluble fiber called beta-D-glucan, according to Li. —Andrea Margolis, FOXNews.com, 21 Apr. 2026

Chia Seeds Chia seeds are rich in soluble fiber and quercetin, an antioxidant that may support heart health by reducing inflammation. —Abby Norman, Verywell Health, 21 Apr. 2026

In addition, a dose of fertilizer (either slow-release granular every couple of months or water-soluble once a week) will keep annuals blooming until a frost. —Arricca Elin Sansone, Southern Living, 10 Apr. 2026

Word History

Etymology

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

First Known Use

15th century, in the meaning defined at sense 1

Rhymes for soluble

• indissoluble
• insoluble
• revoluble
• voluble

Kids Definition

soluble

adjective

sol·​u·​ble ˈsäl-yə-bəl 

1

: capable of being dissolved in a liquid

sugar is soluble in water

2

: capable of being solved or explained : solvable

a soluble problem

Medical Definition

soluble

adjective

sol·​u·​ble ˈsäl-yə-bəl 

1

: susceptible of being dissolved in or as if in a fluid

2

: capable of being emulsified

a soluble oil