1. The sudden occurrence of a violent discharge of steam and volcanic material
   "The volcanic eruption covered the nearby town in ash";
   - volcanic eruption
    
2. A sudden violent spontaneous occurrence (usually of some undesirable condition)
   "the eruption of hostilities";
   - outbreak, irruption
    
3. (of volcanoes) pouring out fumes or lava (or a deposit so formed)
   "The sudden eruption of steam startled the hikers";
   - eructation [formal], extravasation
    
4. The emergence of a tooth as it breaks through the gum
   "The baby's first tooth eruption was accompanied by fussiness"
    
5. (medicine) symptom consisting of a rash or blemish appearing on the skin
   "The patient developed a sudden eruption on her arms after taking the medication"

Sounds like: erupting, irruptingn, irruptio

Derived forms: eruptions

Type of: action, activeness, activity, discharge, emergence, happening, issue, natural event, occurrence, occurrent, symptom

Encyclopedia: Eruption