The sudden occurrence of a violent discharge of steam and volcanic material(noun)
WordNet. Princeton University. 2010.
Use "volcanic eruption" in a sentence
"In a volcanic eruption between the islands of Thera and Therasia he saw a Divine judgment for the idolatry of image - worship, and in an edict (726) explained that Christian images had taken the place of idols, and the venerators of images were idolaters, since, according to the law of"