'ampullula' originates from Latin, specifically the word 'ampullula,' a diminutive form of 'ampulla,' where 'ampulla' meant 'a small bottle or flask.'

'ampullula' has remained largely unchanged from its Latin origins, retaining its diminutive form and meaning in modern English.

Initially, it meant 'a small bottle or flask,' and this meaning has largely remained the same in modern anatomical usage.