vulcanian
Vulcanian (adj) means belonging to, connected with, or made by Vulcan, the Roman deity of fire and metalworking, identified with the Greek god Hephaestus and various Germanic and Celtic gods.
Etymology
Directly from Latin Vulcāniānus or from Latin Vulcānius + -an within English, from Vulcānus + -iānus (“-ian”) or -ius (“-y: forming adjectives”). In reference to a type or stage of volcanic activity, via Italian Vulcaniano, with specific reference to Giuseppe Mercalli's observations of the 1888–90 eruptions of the Aeolian island Vulcano. Equivalent to Vulcan + -ian. Doublet of volcanian. Compare slightly earlier Middle French vulcanien.