'acini' originates from Latin, specifically the word 'acinus,' where 'acinus' meant 'berry' or 'grape.'

'acinus' was used in Latin to describe small berry-like structures, and eventually became the modern English word 'acini' to describe glandular structures.

Initially, it meant 'berry' or 'grape,' but over time it evolved into its current meaning of 'small sac-like cavities in a gland.'