'Arabia' originates from Latin, specifically the word 'Arabia', which derives from Greek 'Arabía', ultimately from a Semitic root 'ʿ-r-b' where the root meant 'west' or 'desert'.

'Arabia' changed from Greek 'Arabía' into Latin 'Arabia' and was adopted into Medieval and then Modern English with little alteration, preserving its reference to the land of the Arabs.

Initially, it meant 'land of the west/desert' or simply 'land of the Arabs'; over time it evolved into the more specific modern sense of the Arabian Peninsula and, in some contexts, the Arab world or Saudi Arabia.