'Adventism' originates from the Latin word 'adventus,' meaning 'coming' or 'arrival,' combined with the suffix '-ism' to denote a belief system.

'Adventus' transformed into the English word 'advent,' and eventually became 'Adventism' to describe the religious movement.

Initially, it referred to the 'coming' of Christ, but over time it evolved into a broader religious movement emphasizing this event.