Legal Definition of Citizen: An inhabitant of a town, city, state, or country, entitled to all its privileges. There are two main types of citizens of a country, namely, the native-born citizen (one born in his country) and the naturalized citizen (one born in a foreign country but who has adopted the citizenship of his present country) | Learn the legal definition of a citizen and why it matters for your business. Discover the differences between native-born and naturalized citizens, their rights and privileges, and how understanding citizenship can impact your operations