Also khacan. [Turkī (hence Pers. and Arab.) khāqān king, emperor, Great Khan: see CHAGAN and KHAN1.] A Tartar ruler: a khan.

1

1777.  J. Richardson, Dissert. East Nat., 26. The Khakan used often to preside at their exercises of genius.

2

1859.  C. Forster, Primev. Lang., Mon. Assyria, 314, note. When the present Khacan shall have departed, this man will succeed to the throne.

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  Hence Khakanship, the office of khakan.

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1859.  C. Forster, Primev. Lang., Mon. Assyria, 314, note. They give the Khacanship only to Jews.

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