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

• 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 Seeds Chia seeds are rich in soluble fiber and quercetin, an antioxidant that may support heart health by reducing inflammation. —Abby Norman, Verywell Health, 26 Aug. 2025

Just one cup has over 11 grams of both soluble and insoluble fiber. —Ashia Aubourg, Outside, 16 Aug. 2025

The water soluble vitamin, explains Samantha Dieras, RN, DCN, director of ambulatory nutrition services at Mount Sinai Hospital, plays a vital role in nerve function, blood cell formation, metabolism, DNA production, and many other functions that our bodies need to stay healthy. —Audrey Noble, Vogue, 31 July 2025

Sources of soluble fiber include:1 Barley Beans Fruits Nuts and seeds Oat bran Peas Vegetables Insoluble fiber speeds digestion. —Dr. Roshini Raj, Health, 7 Aug. 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