Im-pē'ri-al1, a.
(89), a. [Fr. impérial, Sp. & Pg. imperial, Pr. emperial, It. imperiale, Lat. imperialis, from imperium, command, sovereignty, empire, from imperare, to command.] 1. Pertaining to an empire, or to an emperor; as, an imperial government; imperial authority or edict; imperial power or sway; the imperial parliament. The last That wore the imperial diadem of Rome. Shak. 2. Belonging to supreme authority, or one who wields it; royal; sovereign; supreme. “The imperial democracy of Athens.” Mitford. Whom opinion crowns With an imperial voice. Shak. He sounds his imperial clarion along the whole line of battle. E. Everett. 3. Of superior size or excellence; as, imperial paper, tea, &c. Imperial chamber, the sovereign court of the German empire. — Imperial city, a city in Germany having no head but the emperor. — Imperial diet, an assembly of all the states of the German empire.