[ in-sol-yuh-buh l ]
/ ɪnˈsɒl yə bəl /


incapable of being dissolved: insoluble salts.
incapable of being solved or explained: an insoluble problem.

Origin of insoluble

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

Related forms

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

Can be confused

insoluble insolvable unsolvable Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for insolubility

British Dictionary definitions for insolubility


/ (ɪnˈsɒljʊbəl) /


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

Derived Forms

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

Medicine definitions for insolubility


[ ĭn-sŏlyə-bəl ]


Not soluble.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for insolubility


[ ĭn-sŏlyə-bəl ]

Not capable of being fully dissolved. Fats and oils are insoluble in water.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.