ERUPTION
eruption
(noun) the emergence of a tooth as it breaks through the gum
bang, clap, eruption, blast, bam
(noun) a sudden very loud noise
outbreak, eruption, irruption
(noun) a sudden violent spontaneous occurrence (usually of some undesirable condition); “the outbreak of hostilities”
eruption, eructation, extravasation
(noun) (of volcanos) pouring out fumes or lava (or a deposit so formed)
eruption
(noun) symptom consisting of a breaking out and becoming visible
Source: WordNet® 3.1
Etymology
Noun
eruption (countable and uncountable, plural eruptions)
A violent ejection, such as the spurting out of lava from a volcano.
A sudden release of pressure or tension.
An infection of the skin resulting in a rash or blemishing.
Source: Wiktionary
E*rup"tion, n. Etym: [L. eruptio, fr. erumpere, eruptum, to break
out; e out + rumpere, to break: cf. F. Ă©ruption. See Rupture.]
1. The act of breaking out or bursting forth; as: (a) A violent
throwing out of flames, lava, etc., as from a volcano of a fissure in
the earth's crust. (b) A sudden and overwhelming hostile movement of
armed men from one country to another. Milton. (c) A violent
commotion.
All Paris was quiet . . . to gather fresh strength for the next day's
eruption. W. Irving.
2. That which bursts forth.
3. A violent exclamation; ejaculation.
He would . . . break out into bitter and passionate eruditions. Sir
H. Wotton.
4. (Med.)
Definition: The breaking out of pimples, or an efflorescence, as in
measles, scarlatina, etc.
Source: Webster’s Unabridged Dictionary 1913 Edition