IMPE'RIAL, adjective [Latin imperialis, from impero, to command. See Emperor.] 1. Pertaining to an empire, or to an emperor; as an imperial government; an imperial diadem; imperial authority or edict; imperial power or sway. 2. Royal; belonging to a monarch; as an imperial palace; imperial arts. 3. Pertaining to royalty; denoting sovereignty. 4. Commanding; maintaining supremacy; as the imperial democracy of Athens. Imperial chamber, the sovereign court of the German empire. Imperial city, a city in Germany which has no head but the emperor. Imperial diet, an assembly of all the states of the German empire.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI