VOLCANIC
volcanic
(adjective) 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”
volcanic
(adjective) explosively unstable; “a volcanic temper”
volcanic
(adjective) 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”
Source: WordNet® 3.1
Etymology
Adjective
volcanic (not comparable)
Of or pertaining to a volcano or volcanoes
Produced by a volcano, or, more generally, by igneous agencies
Changed or affected by the heat of a volcano.
(figurative) Reminiscent of a volcano; explosive, violent, full of suppressed anger, energy etc.
Hyponyms
• cryovolcanic
Noun
volcanic (plural volcanics)
A volcanic rock.
The Ellesmere Island Volcanics are a Late Cretaceous volcanic group of volcanoes and lava flows in the Qikiqtaaluk Region of northern Ellesmere Island, Nunavut, Canada.
Source: Wiktionary
Vol*can"ic, a. Etym: [Cf. F. volcanique, It. vulcanico.]
1. Of or pertaining to a volcano or volcanoes; as, volcanic heat.
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 volcano.
– 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.
Source: Webster’s Unabridged Dictionary 1913 Edition