(in imperial Rome) a title of the emperor - a less common word for emperor
WordReference Random House Unabridged Dictionary of American English © 2026
im•pe•ra•tor
(im′pə rä′tər, -rä′tôr, -rā′tər),USA pronunciation n.
im•per•a•to•ri•al
(im per′ə tôr′ē əl, -tōr′-),USA pronunciation adj.
im•per′a•to′ri•al•ly, adv.
im′pe•ra′tor•ship′, n.
- an absolute or supreme ruler.
- Ancient History(in Imperial Rome) emperor.
- Ancient History(in Republican Rome) a temporary title accorded a victorious general.
- Latin imperātor; see emperor
- 1570–80;
im′pe•ra′tor•ship′, n.
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'imperator' also found in these entries (note: many are not synonyms or translations):