1774, from French volcanique, from Italian vulcanico, from vulcano (see volcano). Figurative sense of "prone to explosive activity" is attested from 1854.
volcanic steam
volcanic islands such as Iceland
a volcanic cone is a conical mountain or hill built up of material from volcanic eruptions
a volcanic temper
volcanic rock includes the volcanic glass obsidian
volant
Volapuk
volar
volatile
volatility
volcanic
volcanism
volcano
vole
volition
volkslied
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