insoluble

American  

[in-sol-yuh-buhl] / ɪnˈsɒl yə bəl /

adjective

1. incapable of being dissolved.

   insoluble salts.

2. incapable of being solved or explained.

   an insoluble problem.

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insoluble British  

/ ɪnˈsɒljʊbəl /

adjective

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

2. incapable of being solved

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insoluble Scientific  

/ ĭn-sŏl′yə-bəl /

1. Not capable of being fully dissolved. Fats and oils are insoluble in water.

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Other Word Forms

• insolubility noun
• insolubleness noun
• insolubly adverb
• semi-insoluble adjective

Etymology

Origin of insoluble

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

Example Sentences

In the mouse model, oral arginine lowered amyloid plaque formation and reduced insoluble Aβ42 levels in the brain.

From Science Daily

After 3 hours, the aluminium had reacted with the cathode material and produced a mixture of insoluble aluminium oxides, as well as metallic cobalt and water-soluble lithium oxides.

From Scientific American

The cellulose mat is a source of insoluble fiber, which studies have linked to gut health and improved digestion.

From Salon

On early Earth, this chemical element was locked inside insoluble minerals.

From Reuters

But when the problems addressed are irreducibly political and therefore collective problems, the genre’s frame renders them insoluble.

From New York Times