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

Avocados are also an excellent source of prebiotic fiber and soluble fiber. —Hannah Coakley, Verywell Health, 11 Dec. 2025

For sweetening, the Oreos contain maltitol, a type of sugar alcohol that’s also found in some fruits and vegetables; polydextrose, a soluble fiber; sucralose, a sweetener derived from sugar; and acesulfame potassium, a synthetic sweetener. —Dee-Ann Durbin, Fortune, 11 Dec. 2025

While the idea that fat aids the absorption of fat-soluble nutrients is well established, the Missouri study provides additional detail specific to kale. —Deirdre Bardolf, FOXNews.com, 10 Dec. 2025

The result is a cookie containing maltitol, a type of sugar alcohol found in some fruits and vegetables along with the soluble fiber polydextrose, a sweetener derived from sugar called sucralose and the synthetic sweetener acesulfame potassium. —Jack Beresford, MSNBC Newsweek, 10 Dec. 2025

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