'non-permeable' originates from the Latin word 'permeabilis,' where 'per-' meant 'through' and 'meare' meant 'to pass.' The prefix 'non-' is used to indicate negation.

'permeabilis' transformed into the English word 'permeable,' and with the addition of the prefix 'non-,' it became 'non-permeable.'

Initially, 'permeabilis' meant 'allowing passage,' but with the prefix 'non-,' it evolved to mean 'not allowing passage.'