'reconstitute' originates from Latin, specifically the word 'reconstituere,' where 're-' meant 'again' and 'constituere' meant 'to set up or establish.'

'reconstituere' transformed into the French word 'reconstituer,' and eventually became the modern English word 'reconstitute' through Middle English.

Initially, it meant 'to set up again,' but over time it evolved into its current meaning of 'restoring to original state by adding liquid.'