What is another word for volcanic rock?
Pronunciation: [vɒlkˈanɪk ɹˈɒk] (IPA) 
Volcanic rocks are formed from magma that has been cooled and solidified either on or beneath the Earth's surface. There are various synonyms that could be used in place of 'volcanic rock' such as igneous rock, extrusive rock, and lava rock. Igneous rock is the widely used synonym for volcanic rock as it is a broader term that encompasses both intrusive and extrusive rocks that have solidified from melted or molten minerals. Extrusive rock refers to igneous rock that has formed from lava that has erupted onto the earth's surface and solidified whereas lava rock specifically refers to igneous rock that has been formed due to volcanic eruptions.
