Volcanic means coming from or created by volcanoes. Over 200 people have been killed by volcanic eruptions. relating to or caused by a volcano
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"
Applies to igneous rocks that cool on the surface of the Earth, including beneath water; typically with small crystals due to the rapidity of cooling Synonym of extrusive Antonym of plutonic
explosively unstable; "a volcanic temper" 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
Of, pertaining to, like, or characteristic of a volcano; characterized by or composed of volcanoes; produced, influenced, or changed by a volcano or by volcanic agencies; made of materials derived from volcanoes
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
Natural glass produced by the cooling of molten lava too quickly to permit crystallization. Any glassy rock formed from lava or magma that has a chemical composition close to that of granite. Such molten material may reach very low temperatures without crystallizing, but its viscosity may become very high. Because high viscosity inhibits crystallization, the combination of sudden cooling and loss of volatiles, as when lava extrudes from a volcanic vent, tends to chill the material to a glass rather than crystallize it