German Etymology eruptiv + Gestein Pronunciation Audio:(file) Noun Eruptivgestein n (strong, genitive Eruptivgesteins, plural Eruptivgesteine) (mineralogy) igneous rock Further reading “Eruptivgestein” in Digitales Wörterbuch der deutschen Sprache “Eruptivgestein” in Uni Leipzig: Wortschatz-LexikonWikiwand - on Seamless Wikipedia browsing. On steroids.