Noun
A system of government ruled by a tsar.
A supporter of monarchy ruled by a tsar.
Source: en.wiktionary.orgShame on accursed tsarism which tortured and persecuted the Jews. Shame on those who foment hatred towards the Jews, who foment hatred towards other nations. Vladimir Lenin
Tsarism regards the war as a means of diverting attention from the mounting discontent within the country and of suppressing the growing revolutionary movement. Vladimir Lenin