The word Ottoman is a historical anglicisation of the name of Osman I, the founder of the Empire and of the ruling House of Osman (also known as the Ottoman dynasty). Osman's name in turn was derived from the Persian form of the name ʿUthmān عثمان of ultimately Arabic origin. In Ottoman Turkish, the empire was referred to as Devlet-i ʿAliyye-yi ʿOsmâniyye (دَوْلَتِ عَلِيّهٔ عُثمَانِیّه), (literally "The Supreme State of the Ottomans") or alternatively Osmanlı Devleti (عثمانلى دولتى).[dn 5] In Modern Turkish, it is known as Osmanlı İmparatorluğu ("Ottoman Empire") or Osmanlı Devleti ("The Ottoman State").