'acetonic' originates from 'acetone', specifically the word 'acetum', where 'acet-' meant 'vinegar'.

'acetum' transformed into the French word 'acétone', and eventually became the modern English word 'acetone', from which 'acetonic' is derived.

Initially, it meant 'related to vinegar', but over time it evolved into its current meaning of 'relating to or containing acetone'.