| eruption | (noun) the sudden occurrence of a violent discharge of steam and volcanic material | Synonyms: volcanic eruption |
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| (noun) a sudden very loud noise | Synonyms: bam, bang, blast, clap |
| (noun) the emergence of a tooth as it breaks through the gum | - |
| (noun) a sudden violent spontaneous occurrence (usually of some undesirable condition) | Synonyms: irruption, outbreak |
| (noun) (of volcanoes) pouring out fumes or lava (or a deposit so formed) | Synonyms: eructation, extravasation |
| (noun) symptom consisting of a breaking out and becoming visible | - |