Meaning & Definition of Volcanic in English

1. 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"

2. Explosively unstable

• "A volcanic temper"

3. 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"