Jamshid (Persian: جمشید, Jamshīd) (Middle- and New Persian: جم, Jam) (Avestan: Yima) is a mythological figure of Greater Iranian culture and tradition. In tradition and folklore, Jamshid is described as having been the fourth and greatest king of the epigraphically unattested Pishdadian dynasty ( before Kayanian dynasty). This role is already alluded to in Zoroastrian scripture (e.g. Yasht 19, Vendidad 2), where the figure appears as Avestan language Yima(-Kshaeta) "(radiant) Yima," and from which the name 'Jamshid' then derives.