Definition of volcanic

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Volcanic (a.) Produced by a volcano, or, more generally, by igneous agencies; as, volcanic tufa..

Lern More About Volcanic

Fumarole :: Fumarole (n.) A hole or spot in a volcanic or other region, from which fumes issue..
Sulphur :: Sulphur (n.) A nonmetallic element occurring naturally in large quantities, either combined as in the sulphides (as pyrites) and sulphates (as gypsum), or native in volcanic regions, in vast beds mixed with gypsum and various earthy materials, from which it is melted out. Symbol S. Atomic weight 32. The specific gravity of ordinary octohedral sulphur is 2.05; of prismatic sulphur, 1.96..
Vent :: Vent (n.) A small aperture; a hole or passage for air or any fluid to escape; as, the vent of a cask; the vent of a mold; a volcanic vent..
Leucite :: Leucite (n.) A mineral having a glassy fracture, occurring in translucent trapezohedral crystals. It is a silicate of alumina and potash. It is found in the volcanic rocks of Italy, especially at Vesuvius..
Trass :: Trass (n.) A white to gray volcanic tufa, formed of decomposed trachytic cinders; -- sometimes used as a cement. Hence, a coarse sort of plaster or mortar, durable in water, and used to line cisterns and other reservoirs of water..
Scoria :: Scoria (n.) Cellular slaggy lava; volcanic cinders.
Pozzolana :: Pozzolana (n.) Volcanic ashes from Pozzuoli, in Italy, used in the manufacture of a kind of mortar which hardens under water..
Fiorite :: Fiorite (n.) A variety of opal occuring in the cavities of volcanic tufa, in smooth and shining globular and botryoidal masses, having a pearly luster; -- so called from Fiora, in Ischia..
Tufa :: Tufa () A friable volcanic rock or conglomerate, formed of consolidated cinders, or scoria..
Volcanically :: Volcanically (adv.) Like a volcano.
Volcanic :: Volcanic (a.) Of or pertaining to a volcano or volcanoes; as, volcanic heat..
Volcanic :: Volcanic (a.) Produced by a volcano, or, more generally, by igneous agencies; as, volcanic tufa..
Eruptive :: Eruptive (a.) Produced by eruption; as, eruptive rocks, such as the igneous or volcanic..
Volcanian :: Volcanian (a.) Volcanic.
Volcanism :: Volcanism (n.) Volcanic power or action; volcanicity.
Mascagnite :: Mascagnite (n.) Native sulphate of ammonia, found in volcanic districts; -- so named from Mascagni, who discovered it..
Pearlstone :: Pearlstone (n.) A glassy volcanic rock of a grayish color and pearly luster, often having a spherulitic concretionary structure due to the curved cracks produced by contraction in cooling. See Illust. under Perlitic..
Vulcanian :: Vulcanian (a.) Volcanic.
Volcanicity :: Volcanicity (n.) Quality or state of being volcanic; volcanic power.
Belonite :: Belonite (n.) Minute acicular or dendritic crystalline forms sometimes observed in glassy volcanic rocks.
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