1. relating to or produced by or consisting of volcanoes
; - Example: "volcanic steam"- Example: "volcanic islands such as Iceland"- Example: "a volcanic cone is a conical mountain or hill built up of material from volcanic eruptions"
2. explosively unstable
; - Example: "a volcanic temper"
3. igneous rock produced by eruption and solidified on or near the earth's surface
; rhyolite or andesite or basalt
; - Example: "volcanic rock includes the volcanic glass obsidian"
The Collaborative International Dictionary of English v.0.48:
Volcanic \Vol*can"ic\, a. [Cf. F. volcanique, It. vulcanico.]
1. Of or pertaining to a volcano or volcanoes; as, volcanic
2. Produced by a volcano, or, more generally, by igneous
agencies; as, volcanic tufa.
3. Changed or affected by the heat of a volcano.
Volcanic bomb, a mass ejected from a volcano, often of
molten lava having a rounded form.
Volcanic cone, a hill, conical in form, built up of
cinders, tufa, or lava, during volcanic eruptions.
Volcanic foci, the subterranean centers of volcanic action;
the points beneath volcanoes where the causes producing
volcanic phenomena are most active.
Volcanic glass, the vitreous form of lava, produced by
sudden cooling; obsidian. See Obsidian.
Volcanic mud, fetid, sulphurous mud discharged by a
Volcanic rocks, rocks which have been produced from the
discharges of volcanic matter, as the various kinds of
basalt, trachyte, scoria, obsidian, etc., whether compact,
scoriaceous, or vitreous.
WordNet (r) 3.0 (2006):
adj 1: relating to or produced by or consisting of volcanoes;
"volcanic steam"; "volcanic islands such as Iceland"; "a
volcanic cone is a conical mountain or hill built up of
material from volcanic eruptions"
2: explosively unstable; "a volcanic temper"
3: igneous rock produced by eruption and solidified on or near
the earth's surface; rhyolite or andesite or basalt;
"volcanic rock includes the volcanic glass obsidian"
Moby Thesaurus II by Grady Ward, 1.0:
49 Moby Thesaurus words for "volcanic":
agitable, bursting, combustible, detonating, edgy, emotional,
emotionally unstable, eruptive, excitable, explodable, explosible,
explosive, fierce, fiery, fulminating, furious, hasty,
high-mettled, high-spirited, high-strung, highly emotional, hot,
hot-tempered, hotheaded, impetuous, inflammable, irascible,
irritable, mettlesome, nervous, passionate, peppery, perturbable,
prickly, quick, quick-tempered, sensitive, short-tempered,
simmering, skittish, spunky, startlish, stormy, tempestuous,
tornadic, touchy, vehement, violent, wild