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Synonyms for Eruption (same or very similar meaning)

WordNet sense 1 ((of volcanos) pouring out fumes of lava (or a deposit so formed)):
eructation, extravasation

WordNet sense 2 (the sudden occurrence of a violent discharge of steam and volcanic material):
volcanic eruption

WordNet sense 3 (a sudden violent spontaneous occurrence (usually of some undesirable condition)):
irruption, outbreak

WordNet sense 4 (a sudden very loud noise):
bang, blast, clap, Bam


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