(aircraft) The Avro Vulcan, a type of jet-powered British bomber aircraft built by Avro during the Cold War.

(Roman mythology) The god of volcanoes and fire, especially the forge, also the patron of all craftsmen, principally blacksmiths. The Roman counterpart of Hephaestus.

(fiction) An inhabitant of the planet Vulcan; a species that values a personal emphasis on logic and strict personal emotional control.

(fiction) An inhabited planet, the homeworld of the Vulcan species. / A language constructed for the Star Trek franchise, spoken by the fictional Vulcan species.

The quality or state of being volcanic. / The level of power of a volcano.

plural of vulcanicity

Of, pertaining to, or resembling the Roman god Vulcan.

Alternative spelling of volcanic / Fiery.

(transitive) To treat rubber with heat and (usually) sulphur to harden it and make it more durable. / (intransitive) To undergo such treatment.

simple past tense and past participle of vulcanize