- volcanic eruption, eruption - the sudden occurrence of a violent discharge of steam and volcanic material
--1 is a kind of discharge
--1 has particulars: Plinian eruptionDerived form: verb erupt5 - eruption - symptom consisting of a breaking out and becoming visible
--2 is a kind of symptom
--2 has particulars:eczema vaccinatum, Kaposi's varicelliform eruption; enanthem, enanthema; exanthem, exanthema, skin eruption; rash, roseola, efflorescence, skin rash - eruption, eructation, extravasation - (of volcanos) pouring out fumes or lava (or a deposit so formed)
--3 is a kind of action, activity, activeness
Derived form: verb erupt5 - outbreak, eruption, irruption - a sudden violent spontaneous occurrence (usually of some undesirable condition); "the outbreak of hostilities"
--4 is a kind of happening, occurrence, natural event
--4 has particulars: epidemic; recrudescenceDerived form: verb erupt2 - bang, clap, eruption, blast, loud noise - a sudden very loud noise
--5 is a kind of noise
--5 has particulars: water hammer- eruption - the emergence of a tooth as it breaks through the gum
--6 is a kind of emergence, egress, issue
Derived form: verb erupt4 - eruption, eructation, extravasation - (of volcanos) pouring out fumes or lava (or a deposit so formed)