'vesicle' originates from Latin, specifically the word 'vesicula,' where 'vesica' meant 'bladder' or 'blister.'

'vesicula' transformed into the Old French word 'vesicle,' and eventually became the modern English word 'vesicle.'

Initially, it meant 'a small bladder or blister,' but over time it evolved into its current meaning of 'a small fluid-filled sac or cellular structure.'