Dezful dĕzfo͞ol´ [key], city (1991 pop. 181,309), Khuzestan prov., SW Iran, on the Dez River, near the site of ancient Susa . It is the trade center for an irrigated farm region. Petroleum is produced nearby. The city gets its name, which means citadel bridge, from a bridge built across the Dez by (according to legend) Shapur II. Dezful was a scene of rioting on the eve of the Iranian Revolution in 1978; it was attacked by Iraqi planes in the Iran-Iraq War . The city is also known as Dizful and Desful.

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