Ukase

In Imperial Russia, a ukase (/juːˈkeɪz, -ˈkeɪs/) or ukaz (Russian: указ [ʊˈkas]) was a proclamation of the tsar, government, or a religious leader (patriarch) that had the force of law. "Edict" and "decree" are adequate translations using the terminology and concepts of Roman law.

From the Russian term, the word ukase has entered the English language with the meaning of "any proclamation or decree; an order or regulation of a final or arbitrary nature".