b : relating to, resulting from, or suggestive of the intrusion or extrusion of magma or volcanic activity. Igneous rocks are those that form via the process of melting and cooling. Definition of igneous. The definition of igneous is something produced by volcanic action or intense fire. For this reason, they are called primary rocks. Let us explore what leads to such formation. Igneous rock is formed from magma. The core of the earth, aka the center of the earth, has a massive raging fire. Learn more. Rocks that have formed from solidified lava from a volcano are an example of rocks that would be described as igneous. of, relating to, or characteristic of fire. Each kind of texture has a variety of different characteristics that make them unique. Igneous rocks are rocks formed from molten magma. Origin of Igneous Rocks Igneous Rocks are formed by cooling or solidification of molten or partly molten material, i.e. The magma may be derived from partial melts of existing rocks in both a planet’s mantle or crust. (of rocks) formed from magma (= very hot liquid rock that has cooled) 2. Igneous rocks are first formed rocks which had made up the primodial earth’s crust. Forms when clasts (Rock or mineral fragments) are cemented together by a mineral Chemical Sedimentary Rock Forms when mineral crystallize out of solution (meaning that minerals dissolved in a liquid are left behind when the liquid evaporates) (of rocks) formed from…. from a magma or lava. By contrast, Intrusive rocks are formed from magma that cools underground. The rocks are formed when lava or magma cools, hardens, and forms new rocks. Meanings for igneous rock rock formed by the solidification of molten magma It is a rock made by molten lava which isn’t also called magma Lava cools down to form rocks such as tuff and basalt. There are nine main types of igneous rock textures: Phaneritic, vesicular, aphanitic, porphyritic, poikilitic, glassy, pyroclastic, equigranular, and spinifex. Igneous Rock Definition. When magma erupts and cools down to form hard objects, they are called igneous rocks. Igneous rock is shaped via the cooling and solidification of magma or lava. The material is made liquid by the heat inside the Earth's mantle. 2 : of, relating to, or … igneous meaning: 1. Igneous is a Latin word that means fire. produced under conditions involving intense heat, as rocks of volcanic origin or rocks crystallized from molten magma. or pronounce in different accent or variation ? 1 a : formed by solidification of magma igneous rock. 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