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English definition of “insoluble”

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insoluble

adjective uk   /ɪnˈsɒl.jʊ.bl̩/ us    /-ˈsɑːl.jə-/

insoluble adjective (PROBLEM)

( US also insolvable) (of a problem) so difficult that it is impossible to solve: Traffic congestion in large cities seems to be an insoluble problem.

insoluble adjective (SUBSTANCE)

(of a substance) impossible to dissolve: These minerals are all insoluble in water.
insolubility
noun [U] uk   /ɪnˌsɒl.jʊˈbɪl.ɪ.ti/ us    /-ˌsɑːl.jəˈbɪl.ə.t̬i/
(Definition of insoluble from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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