Em"per*or (?), n. [OF. empereor, empereour, F. empereur, L. imperator, fr. imperare to command; in in + parare to prepare, order. See Parade, and cf. Imperative, Empress.]
The sovereign or supreme monarch of an empire;
-- a title of
dignity superior to that of king; as, the
emperor of Germany or of Austria; the emperor or Czar of Russia.
Emperor goose
(Zoöl.), a large and handsome goose (Philacte
canagica), found in
Alaska. -- Emperor moth (Zoöl.), one of several large and beautiful bombycid moths, with transparent spots on the wings; as the American Cecropia moth (Platysamia cecropia), and the European species
(Saturnia pavonia). -- Emperor paper. See under Paper. --
Purple emperor
(Zoöl.), a large, strong British butterfly
(Apatura iris).
Hear it pronounced