The Toman (, pronounced ), is a superunit of the official currency of Iran, the rial. Toman, derived from a Mongolian word meaning ten thousand (see tumen). It was divided into 10,000 dinar. Between 1798 and 1825, the toman was also subdivided into 8 rial, each of 1250 dinar. In 1825, the qiran was introduced, worth 1000 dinar or one tenth of a toman.