erupting or tending to erupt; "a geyser is an intermittently eruptive hot spring" 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
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
erupting or tending to erupt; "a geyser is an intermittently eruptive hot spring"
tending to burst forth suddenly; causing a skin rash (Pathology); characterized by a skin rash (Pathology)