'fermentation' originates from Latin, specifically the word 'fermentatio,' where 'fermentum' meant 'leaven' or 'yeast.'

'fermentatio' transformed into the Old French word 'fermentacion,' and eventually became the modern English word 'fermentation' through Middle English.

Initially, it meant 'leavening or causing to rise,' but over time it evolved into its current meaning of 'chemical breakdown by microorganisms.'