Gabbro is one of the important type of rocks. If we have to define Gabbro in general, Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt. Gabbro comes under Igneous Rocks. All Igneous Rocks have similar properties and formation process. Along with Gabbro Definition, know more about the History of Gabbro, Etymology of Gabbro in next sections.