Vulcāˈnian adjective

1. Of, relating to, like, related to, sprung from or made by Vulcan
2. (without cap) volcanic
3. (without cap) of a volcanic eruption that discharges gases and ash but little or no lava

vulcanic /-kanˈik/ adjective

1. Volcanic
2. (with cap) of Vulcan

vulcanicity /-isˈi-ti/ noun

Volcanic action or phenomena, volcanicity

vulˈcanism noun

1. Volcanic activity (also volˈcanism)
2. (with cap) the teaching of the Vulcanists

Vulˈcanist or Volˈcanist noun (obsolete geology)

1. A Plutonist, a follower of James Hutton (1726–97), who asserted the geological importance of subterranean heat and the igneous origin of such rocks as basalt, opp to Neptunist
2. (without cap) a vulcanologist

vulˈcanite noun

1. The harder of the two kinds of vulcanized rubber, the softer kind being called soft rubber
2. A general name for any igneous rock of fine grain-size

vulcanīˈzable or vulcanīˈsable adjective

vulcanīzāˈtion or vulcanīsāˈtion noun

vulˈcanize or vulˈcanise transitive verb

To treat (rubber, etc) with sulphur or sulphur compounds, etc to improve its strength or otherwise modify its properties

To undergo such treatment

vulcanologˈical or volcanologˈical adjective

vulcanolˈogist or volcanolˈogist noun

vulcanolˈogy noun

The scientific study of volcanoes and volcanic phenomena

vulcanized fibre noun

A fibre obtained by treating paper pulp with zinc chloride solution, used for low-voltage insulation

Vulcan's badge noun

A cuckold's horns