Thesaurus: volcanic

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Definitions

1. a. Of or pertaining to a volcano or volcanoes; as, volcanic heat.
2. a. Produced by a volcano, or, more generally, by igneous agencies; as, volcanic tufa.
3. a. Changed or affected by the heat of a volcano.
4. adj. relating to or produced by or consisting of volcanoes
5. adj. explosively unstable
6. adj. igneous rock produced by eruption and solidified on or near the earth's surface; rhyolite or andesite or basalt
7. 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.
8. j:100 a. relating to or produced by or consisting of volcanoes s. explosively unstable s. igneous rock produced by eruption and solidified on or near the earth's surface; rhyolite or andesite or basalt