a substance capable of bringing about fermentation
cause to undergo fermentation; "We ferment the grapes for a very long time to achieve high alcohol content"; "The vintner worked the wine in big oak vats"
work up into agitation or excitement; "Islam is fermenting Africa"
be in an agitated or excited state; "The Middle East is fermenting"; "Her mind ferments"
making claim to or creating an appearance of (often undeserved) importance or distinction; "a pretentious country house"; "a pretentious fraud"; "a pretentious scholarly edition"
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"