Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Volcanic \Vol*can"ic\, a. [Cf. F. volcanique, It. vulcanico.]
Of or pertaining to a volcano or volcanoes; as, volcanic heat.
Produced by a volcano, or, more generally, by igneous agencies; as, volcanic tufa.
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.
Douglas Harper's Etymology Dictionary
1774, from French volcanique, from Italian vulcanico, from vulcano (see volcano). Figurative sense of "prone to explosive activity" is attested from 1854.
a. 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. 4 Reminiscent of a volcano; explosive, violent, full of suppressed anger, energy etc.
adj. 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"
explosively unstable; "a volcanic temper"
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" [syn: eruptive]
Volcanic is an adjective used for things and concepts related to volcanos.
It may also refer to:
Usage examples of "volcanic".
Leaving the cripple ablaze, settling, and pouring volcanic black smoke from the flammable cargo, he swung around in a long approach to what looked like a big troop Carrier, by far the fattest target in sight.
These relics included an enclosure of coral blocks marking the outlines of a rectangular building which, Emory and Finney considered, showed similarities to some Tongan structures, and basalt adzes which must have come from a high volcanic island, since basalt does not occur naturally on low atolls.
Sinclair objected that the mortar was made of andesite, a volcanic rock not often found in the deep gravels at Table Mountain.
Medium grey andesite, an igneous volcanic rock, speckled with crystals of dark minerals, knobbed with hard protrusions.
And, of course, there was the empty space for Bazil Broketail of Quosh, lost with his dragonboy in the volcanic doom of Heruta.
He saw, for one instant, the massive cliffs of ice glittering like volcanic glass in iron twilight and below them the beveled and faceted jewel face of a shallow antigrav dome closing in all the valley beneath.
Land area was scant, isolated volcanic tips thrust above the endlessly rolling seas, but the location of the planet saved long and tedious blinks from that sector of space back into Empire central.
It turned out that under the western United States there was a huge cauldron of magma, a colossal volcanic hot spot, which erupted cataclysmically every 600,000 years or so.
Triassic red sand, acidic volcanics, pink feldspar, green chlorite, ironstone, grit, sand and silt.
At first, he thought them to be some natural phenomenon, volcanic activity, perhaps, and wondered if he was giving the ooglith cloaker too much credit.
Potassium-argon dates have meaning only if the bones were found securely in place within or beneath the layers of dated volcanic material.
It makes the crystal escalator on the red volcanic slope look like nothing so much as a snake chopped in half with a hoe.
How like a volcanic crater after the evomition of its lava in a fit of burning cholic, and striving to resettle its angry and tumultuating stomach!
In the middle of the next afternoon they couched the camels in the lengthening shadow of a small volcanic hillock and fed them on the fodder they had cut on the riverbank.
Overlying the fossiliferous Cretaceous strata are resistant Late Tertiary volcanic and volcanistic rocks, which form the higher parts of the Shadow Peak Mountains.