What is another word for intrusive rocks?
Pronunciation: [ɪntɹˈuːsɪv ɹˈɒks] (IPA) 
Intrusive rocks, also referred to as plutonic rocks, are igneous formations that solidify beneath the Earth's surface through the slow cooling and crystallization of magma. These rocks differ from their extrusive counterparts, as they are not expelled onto the Earth's surface. Synonymous terms commonly used for intrusive rocks include "plutonic rocks", "subterranean rocks" or "subvolcanic rocks". The term "plutonic rocks" derives its name from Pluto, the Roman god of the underworld, emphasizing the rocks' subterranean formation. "Subvolcanic rocks" emphasizes their proximity to volcanic activity while "subterranean rocks" highlights their geological position beneath the surface. These synonyms provide various linguistic alternatives to describe and understand intrusive rocks' geological origin and characteristics.
