'enrollee' originates from the French word 'enrôler,' where 'en-' meant 'in' and 'rôle' meant 'roll or list.'

'enrôler' transformed into the English word 'enroll,' and eventually became the modern English word 'enrollee.'

Initially, it meant 'to enter a name on a list,' but over time it evolved into its current meaning of 'a person who is registered.'