As nouns the difference between tsar and tiar
is that tsar is (historical) an emperor of russia (before 1917) and of some south slavic kingdoms while tiar is (poetic|archaic) a tiara.
tsar
Alternative forms
* czar, tzar, csar
Noun
(
en noun)
(historical) An emperor of Russia (before 1917) and of some South Slavic kingdoms.
(figuratively) A person with great power; an autocrat.
(informal, politics, US) An appointed official tasked to regulate or oversee a specific area.
Usage notes
* (emperor of Russia) Officially, emperors after 1721 were styled imperator (); however, the latter is commonly applied to them as well.
Derived terms
* tsardom
* tsarian
* tsarism
* tsarist
Related terms
* csar
* czar
* tsarina
* tsaritsa
* tsarevna
* tsarevich
* tzar
Usage notes
* Although commonly believed to mean specifically a Russian emperor, this is not necessarily the case.
* The spelling (m) is the most common one in the US, especially in the figurative and informal senses. Scholarly literature prefers tsar .
