empress Directory References Discover Timeline of the Space Race, 1957–69 The Largest Islands in the World 11 Egyptian Gods and Goddesses 26 Decade-Defining Events in U.S. History 7 of History's Most Notorious Serial Killers Ten Days That Vanished: The Switch to the Gregorian Calendar Is It ISIS or ISIL? empress title Ask the Chatbot a Question Learn about this topic in these articles:Assorted Referenceshistory of the term “emperor” In emperor…female rulers were always called empress; both males and females held both titles, i.e., tsar (or tsaritsa) and imperator (or imperatritsa).Read MoreSPECIAL FEATURElist of empresses