'absorption' originates from Latin, specifically the word 'absorptio,' where 'ab-' meant 'from' and 'sorbere' meant 'to suck in.'

'absorptio' transformed into the French word 'absorption,' and eventually became the modern English word 'absorption' through Middle English.

Initially, it meant 'to suck in or take in,' and this meaning has largely remained the same in modern usage.