'admiralty' originates from Middle English, specifically the word 'admiralte,' where 'admiral' meant 'commander of a fleet.'

'admiralte' transformed into the modern English word 'admiralty' through the influence of Old French 'amiral' and Arabic 'amir al-bahr,' meaning 'commander of the sea.'

Initially, it meant 'commander of a fleet,' but over time it evolved into its current meaning of 'office or jurisdiction of an admiral.'