Ignĭpŏtens, entis, adj. [ignis-potens],
potent in fire , ruler of fire , ignipotent , a poet. epithet of Vulcan (Vergilian): deus, Verg. A. 12, 90.—Also as subst.: Ignĭpŏtens = Vulcan, id. ib. 8, 414; 423; 628; 710; 10, 243.
īgnipotēns entis, adj.ignis+potens, potent in fire, ruler of fire : deus (Vulcan), V. ...
An Elementary Latin Dictionary