Insoluble Meaning
/ɪnˈsɒljʊbəl/Definition, CEFR level B2, pronunciation, examples, and quiz.
Listen pronunciation
Definition
adjThat cannot be dissolved.
adjThat cannot be solved.
Sentence Examples
This is insoluble in water.
Aluminium is insoluble in water.
Anyone who does not have tools always finds the slightest problem insoluble.
CEFR Practice Quiz
The chemical was completely ____ in water, forming a layer on top.
CEFR Practice Quiz (Alternate)
Oil is ____ in water, which is why it always floats on the surface when you try to mix them.
Word Origin & History
From Middle English insolible, from Middle French insoluble, from Latin insolūbilis, from in- + solūbilis. Piecewise doublet of insolvable and unsolvable. By surface analysis, in- + soluble.
Literary Quotations & Historical Citations
"The reason Fisher concluded that the problem is likely insoluble is that the ability of real-world agents to act on new perceived opportunities of arbitrage – including those that turn out to be incorrect – makes stability impossible to demonstrate without additional strong (and unrealistic) assumptions."
— 2024, Jeremy B. Rudd, A Practical Guide to Macroeconomics, page 3:
"As there is a partial vacuum inside the drum, the liquid is sucked inside the drum and the insolubles are deposited on the outer surface of the membrane filter."
— 2006, Ashok Pandey, Enzyme Technology, page 518:
Explore More B2 Vocabulary Words
CEFR Practice Quiz
The chemical was completely ____ in water, forming a layer on top.
CEFR Practice Quiz (Alternate)
Oil is ____ in water, which is why it always floats on the surface when you try to mix them.