'acidific' originates from Latin, specifically the word 'acidificus', where 'acidus' meant 'sour' and '-ficus' meant 'making'.

'acidificus' transformed into the French word 'acidifique', and eventually became the modern English word 'acidific'.

Initially, it meant 'making sour', but over time it evolved into its current meaning of 'relating to or causing acidity'.