English

acetocarmine

From aceto- + carmine.

Proto-Indo-European *h₂eḱ- ‘sharp’

…

Proto-Italic *akēō

Latin aceō ‘to be sour’

Latin acēscō ‘to become sour, to turn sour’

Latin acētum ‘vinegar’

French carmin ‘carmine, crimson’

Today it means

noun A stain consisting of a solution of carmine in acetic acid.

Language periods are conventional ranges, not dates for this word.

Etymograph / acetocarmine