- Historical a native or inhabitant, esp. a freeman or burgess, of a town or city
- a native, inhabitant, or denizen of any place: citizens of the deep
- a member of a state or nation, esp. one with a republican form of government, who owes allegiance to it by birth or naturalization and is entitled to full civil rights
- a civilian, as distinguished from a person in military service, from a policeman, etc.
Origin of citizenMiddle English and Anglo-French citizein, altered (? influenced, influence by denizen) from Old French citeain from cité: see city; citizensense influenced, influence by use of French citoyen during the French Revolution