Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of volcanic is as below...

Volcanism :: Volcanism (n.) Volcanic power or action; volcanicity.

Lithophyse :: Lithophyse (n.) A spherulitic cavity often with concentric chambers, observed in some volcanic rocks, as in rhyolitic lavas. It is supposed to be produced by expanding gas, whence the name..

Peperino :: Peperino (n.) A volcanic rock, formed by the cementing together of sand, scoria, cinders, etc..

Crystallite :: Crystallite (n.) A minute mineral form like those common in glassy volcanic rocks and some slags, not having a definite crystalline outline and not referable to any mineral species, but marking the first step in the crystallization process. According to their form crystallites are called trichites, belonites, globulites, etc..

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..

Tufa :: Tufa () A friable volcanic rock or conglomerate, formed of consolidated cinders, or scoria..

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..

Volcanically :: Volcanically (adv.) Like a volcano.

Volcanize :: Volcanize (v. t.) To subject to, or cause to undergo, volcanic heat, and to be affected by its action..

Chrysolite :: Chrysolite (n.) A mineral, composed of silica, magnesia, and iron, of a yellow to green color. It is common in certain volcanic rocks; -- called also olivine and peridot. Sometimes used as a gem. The name was also early used for yellow varieties of tourmaline and topaz..

Hornito :: Hornito (n.) A low, oven-shaped mound, common in volcanic regions, and emitting smoke and vapors from its sides and summit..

Lapilli :: Lapilli (n. pl.) Volcanic ashes, consisting of small, angular, stony fragments or particles..

Fumarole :: Fumarole (n.) A hole or spot in a volcanic or other region, from which fumes issue..

Volcanization :: Volcanization (n.) The act of volcanizing, or the state of being volcanized; the process of undergoing volcanic heat, and being affected by it..

Volcanicity :: Volcanicity (n.) Quality or state of being volcanic; volcanic power.

Cone :: Cone (n.) Anything shaped more or less like a mathematical cone; as, a volcanic cone, a collection of scoriae around the crater of a volcano, usually heaped up in a conical form..

Eruptive :: Eruptive (a.) Produced by eruption; as, eruptive rocks, such as the igneous or volcanic..

Volcanic :: Volcanic (a.) Changed or affected by the heat of a volcano.

Scoria :: Scoria (n.) Cellular slaggy lava; volcanic cinders.

Belonite :: Belonite (n.) Minute acicular or dendritic crystalline forms sometimes observed in glassy volcanic rocks.

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