eruption Meaning, Definition & Usage

  1. noun the sudden occurrence of a violent discharge of steam and volcanic material
    volcanic eruption.
  2. noun symptom consisting of a breaking out and becoming visible
  3. noun (of volcanos) pouring out fumes or lava (or a deposit so formed)
    eructation; extravasation.
  4. noun a sudden violent spontaneous occurrence (usually of some undesirable condition)
    outbreak; irruption.
    • the outbreak of hostilities
  5. noun a sudden very loud noise
    bam; bang; blast; clap.
  6. noun the emergence of a tooth as it breaks through the gum

WordNet

E*rup"tion noun
Etymology
L. eruptio, fr. erumpere, eruptum, to break out; e out + rumpere, to break: cf. F. éruption. See Rupture.
Definitions
  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.) The breaking out of pimples, or an efflorescence, as in measles, scarlatina, etc.

Webster 1913