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Persian is an Iranian language belonging to the Indo-Iranian branch of the Indo-European family of languages. In general, Iranian languages are known from three periods, usually referred to as Old, Middle, and New (Modern) periods.
Persian language. Written By: Persian language, also called FÄrsÄ« , member of the Iranian branch of the Indo-Iranian language family. It is the official language of Iran, and two varieties of Persian known as Dari and Tajik are official languages in Afghanistan and Tajikistan, respectively. Modern Persian is most closely related to Middle and Old Persian, former languages of the region of FÄrs (Persia) in southwestern Iran. It is thus called FÄrsÄ« by native speakers. Written in Arabic characters, Modern Persian also has many Arabic loanwords and an extensive literature.