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"
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"
characterized by undue haste and lack of thought or deliberation; "a hotheaded decision"; "liable to such impulsive acts as hugging strangers"; "an impetuous display of spending and gambling"; "madcap escapades"; (`brainish' is archaic)
(of colors or sounds) intensely vivid or loud; "a violent clash of colors"; "her dress was a violent red"; "a violent noise"; "wild colors"; "wild shouts"
effected by force or injury rather than natural causes; "a violent death"
acting with or marked by or resulting from great force or energy or emotional intensity; "a violent attack"; "a violent person"; "violent feelings"; "a violent rage"; "felt a violent dislike"