rocks formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.
Rock formed by the solidification of magma.
any of various crystalline or glassy rocks formed by the cooling and solidification of molten earth material. Igneous rocks comprise one of the three ... [33 related articles]
Solidified from hot molten rock. Volcanic rock is an example of igneous rock.
One of the three principal groups of rock that make up the earth
A rock made from molten (melted) or partly molten material that has cooled and solidified.
A rock formed by the crystallization of magma or lava. Pictures of Igneous Rocks
a rock mass formed by the solidification of material poured (when molten) into the earth's crust or onto its surface. Granite is an igneous rock. 
Rock formed by cooling and solidification of molten silicate minerals (magma). Igneous rocks include volcanic and plutonic rocks.
Rocks formed by solidification of molten magma either beneath (intrusive igneous rock) or at (extrusive igneous rocks) the Earth's surface.
Igneous rock is rock that has originated from molten or semi-molten magma. Igneous rocks are composed almost entirely of silicate minerals. Of many different types, they can be classified in various ways: by composition, crystal size, or mode of occurrence. One method is to divide them according to their silica content into three main groups: acid ...
Any rock solidified from molten or partly molten material. Igneous rock is called intrusive when formed below the surface, or extrusive when formed on the surface.
One of three principle groups of rock that make up the earth
Any rock solidified from molten or partly molten material.
Any rock solidified from molten or partly molten material.
Rock solidified from a molten state.
Igneous rock is formed when liquid magma cools.
rock formed when molten rock has cooled and solidified
rock formed when molten rock has cooled and solidified
Click images to enlargeRock formed from the cooling and solidification of molten rock called magma. The acidic nature of this rock type means that areas with underlying igneous rock are particularly susceptible to the effects of acid rain. Igneous rocks that crystallize slowly from magma below the Earth's surface have...
a rock that solidified from molten or partly molten material, i.e. magma.
Igneous rocks are formed when molten rock (magma) cools and solidifies, with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.
A rock that has crystallized from a molten state.
A rock that originated when a molten magma or lava cooled and solidified.
rock formed by the solidification of molten magma