Meaning & use

soluble

adjective·Academic

Last updated

UK/ˈsɒljəbl/
US/ˈsɑːljəbl/

Meanings

  1. adjectivecomparablechemistry

    Able to dissolve in a liquid, usually water.

    Grammar: Often followed by in: soluble in water.

    Patterns

    • soluble in something
    • water-soluble

    Sugar is soluble in water, but sand is not.

    This vitamin is soluble in fat, not water.

    Soluble aspirin dissolves quickly in a glass of water.

  2. adjectivecomparableformal

    Able to be solved or explained.

    Grammar: Describes problems or puzzles: a soluble problem.

    Patterns

    • a soluble problem

    The engineers believed the problem was soluble with enough time.

    Not every puzzle in the book is soluble.

    He insisted that the conflict was soluble through talks.

Word forms

comparativemore soluble
superlativemost soluble

Common combinations

soluble in water
Salt is soluble in water.
water-soluble
This paint is water-soluble, so it washes off easily.
highly soluble
The powder is highly soluble and mixes instantly.
soluble fiber
Oats are rich in soluble fiber.
soluble problem
They claimed it was a soluble problem.

Synonyms and how they differ

dissolvable
Dissolvable is the plain everyday word for something that can dissolve, while soluble sounds more scientific.
solvable
Solvable fits problems and puzzles only, whereas soluble covers dissolving substances too.
miscible
Miscible describes liquids that mix together, while soluble describes a solid or gas dissolving in a liquid.

Opposites

Word family

solubility noun
the ability of a substance to dissolve
solute noun
the substance that is dissolved
solvent noun
a liquid that dissolves another substance
dissolve verb
to mix into a liquid until it disappears
insoluble adjective
not able to dissolve or be solved

Commonly confused: soluble or solvent?

soluble vs solvent

A solvent is the liquid that does the dissolving, while soluble describes the substance that dissolves; solvent also means able to pay debts.

Practice

Because the powder is ______ in water, it disappears completely when stirred into a glass.

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