insoluble

[ in-sol-yuh-buhl ]

/ ɪnˈsɒl yə bəl /

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See synonyms for insoluble on Thesaurus.com

adjective

incapable of being dissolved: insoluble salts.

incapable of being solved or explained: an insoluble problem.

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Origin of insoluble

1350–1400; <Latin insolūbilis; replacing Middle English insolible<Middle French insoluble< L. See in-³, soluble

OTHER WORDS FROM insoluble

in·sol·u·bil·i·ty, in·sol·u·ble·ness, nounin·sol·u·bly, adverbsem·i-in·sol·u·ble, adjective

WORDS THAT MAY BE CONFUSED WITH insoluble

insoluble , insolvable, unsolvable

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use insoluble in a sentence

These are insoluble twisted fibers made primarily of a protein called tau, which normally stabilize the microtubules in neurons and allow nutrients and other good molecules to get into the cell.
Four plants that are scientifically proven to be therapeutic|Sandra Gutierrez G.|January 25, 2021|Popular-Science
Give Paul Stamets an insoluble problem and he’ll toss you a new way it can be decomposed, poisoned, or healed by a fungus.
The Fungal Evangelist Who Would Save the Bees - Issue 90: Something Green|Merlin Sheldrake|September 23, 2020|Nautilus
The obstacle to its use has been its insolubility and the consequent uncertainty of the degree of its absorption.
The Propaganda for Reform in Proprietary Medicines, Vol. 1 of 2|Various
The sulphate, owing to its insolubility, is the only salt of barium which is not poisonous.
Cooley's Cyclopdia of Practical Receipts and Collateral Information in the Arts, Manufactures, Professions, and Trades..., Sixth Edition, Volume I|Arnold Cooley

Rosalind was shirking a problem she dared not face from a cowardly conviction of its insolubility.
Somehow Good|William de Morgan
Platinum is detected when in the metallic state by its physical characters and insolubility in acids.
A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob Beringer
They differ from gold, platinum, and iridium by the insolubility of their sulphides in a solution of sodium sulphide.
A Textbook of Assaying: For the Use of Those Connected with Mines.|Cornelius Beringer and John Jacob Beringer

British Dictionary definitions for insoluble

insoluble

/ (ɪnˈsɒljʊbəl) /

adjective

incapable of being dissolved; incapable of forming a solution, esp in water

incapable of being solved

Derived forms of insoluble

insolubility or insolubleness, nouninsolubly, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012