'eruption' definitions:

Definition of 'eruption'

From: WordNet
noun
The sudden occurrence of a violent discharge of steam and volcanic material [syn: volcanic eruption, eruption]
noun
Symptom consisting of a breaking out and becoming visible
noun
(of volcanos) pouring out fumes or lava (or a deposit so formed) [syn: eruption, eructation, extravasation]
noun
A sudden violent spontaneous occurrence (usually of some undesirable condition); "the outbreak of hostilities" [syn: outbreak, eruption, irruption]
noun
A sudden very loud noise [syn: bang, clap, eruption, blast, bam]
noun
The emergence of a tooth as it breaks through the gum

Definition of 'eruption'

From: GCIDE
  • eruption \e*rup"tion\, n. [L. eruptio, fr. erumpere, eruptum, to break out; e out + rumpere, to break: cf. F. ['e]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 or 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. [1913 Webster]
  • All Paris was quiet . . . to gather fresh strength for the next day's eruption. --W. Irving. [1913 Webster]
  • 2. That which bursts forth. [1913 Webster]
  • 3. A violent exclamation; ejaculation. [1913 Webster]
  • He would . . . break out into bitter and passionate eruditions. --Sir H. Wotton. [1913 Webster]
  • 4. (Med.) The breaking out of pimples, or an efflorescence, as in measles, scarlatina, etc. [1913 Webster]