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

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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

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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

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