'non-soluble' originates from Latin, specifically the word 'solubilis,' where 'solvere' meant 'to loosen or dissolve.' The prefix 'non-' indicates negation.

'solubilis' transformed into the French word 'soluble,' and eventually became the modern English word 'soluble.' The prefix 'non-' was added to indicate the opposite meaning.

Initially, 'soluble' meant 'able to be dissolved,' and with the prefix 'non-,' it evolved to mean 'not able to be dissolved.'