'Christianity' originates from Greek, specifically the word 'Χριστιανισμός' (Christianismos), where 'Χριστός' (Christos) meant 'anointed one'.

'Christianismos' transformed into the Latin word 'Christianitas', and eventually became the modern English word 'Christianity'.

Initially, it meant 'the state of being a Christian', but over time it evolved into its current meaning of 'the religion based on the teachings of Jesus Christ'.