'perceptibly' originates from Latin, specifically the word 'perceptibilis,' where 'percipere' meant 'to seize, understand.'

'perceptibilis' transformed into the French word 'perceptible,' and eventually became the modern English word 'perceptible,' with 'perceptibly' as its adverbial form.

Initially, it meant 'capable of being perceived,' and this meaning has largely remained the same in modern usage.