Arizona's third-largest city refers to the city that occupies the third position in terms of population within the state. Synonyms for the phrase include "the third most populous city in Arizona," "Arizona's third most populated city," or simply "the third biggest city in Arizona." Other synonyms might include "the third largest urban center in Arizona," "Arizona's third most densely populated city," or "the third most heavily inhabited city in Arizona." Using synonyms is important in writing so as to avoid repetition and add variety to one's language. Regardless of the phrasing used, the reference remains to the third most populated city in Arizona.