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Webster 1913 Edition

Adj.

Of or pertaining to Vulcan; made by Vulcan; Vulcanian.

Of or pertaining to volcanoes; specifically, relating to the geological theory of the Vulcanists, or Plutonists.

See also: vulcanic

Vulcanic ‎(not comparable)

Of, pertaining to, or resembling the Roman god Vulcan.
- 1856, Herman Melville, "The Bell-Tower" in The Piazza Tales:
  His still, Vulcanic face hiding its burning brightness like a forge, he moved with ostentatious deference towards the scuttle.

See also: Vulcanic

vulcanic ‎(comparative more vulcanic, superlative most vulcanic)