"republic" in the noun sense
1. democracy, republic, commonwealth
a political system in which the supreme power lies in a body of citizens who can elect people to represent them
a form of government whose head of state is not a monarch
"the head of state in a republic is usually a president"
Source: WordNet® (An amazing lexical database of English)
Princeton University "About WordNet®."
WordNet®. Princeton University. 2010.
View WordNet® License