from The American Heritage® Dictionary of the English Language, 4th Edition

  • intransitive v. To emerge violently from restraint or limits; explode: My neighbor erupted in anger over the noise.
  • intransitive v. To become violently active: The volcano erupted after years of dormancy.
  • intransitive v. To force out or release something, such as steam, with violence or suddenness.
  • intransitive v. To break through the gums in developing. Used of teeth.
  • intransitive v. To appear on the skin. Used of a rash or blemish.
  • transitive v. To force out violently.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • v. to violently eject
  • v. to spontaneously release pressure or tension

from the GNU version of the Collaborative International Dictionary of English

  • intransitive v. To eject something, esp. lava, water, etc., as a volcano or geyser.
  • intransitive v. To burst forth; to break out, as ashes from a volcano, teeth through the gums, etc.
  • transitive v. To cause to burst forth; to eject.

from The Century Dictionary and Cyclopedia

  • To burst forth suddenly and violently; break or belch out; send forth matter.
  • To throw out suddenly and with great violence; emit violently; cast out, as lava from a volcano; belch.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • v. become active and spew forth lava and rocks
  • v. appear on the skin
  • v. start abruptly
  • v. force out or release suddenly and often violently something pent up
  • v. break out
  • v. become raw or open
  • v. erupt or intensify suddenly
  • v. start to burn or burst into flames


from The American Heritage® Dictionary of the English Language, 4th Edition

Latin ērumpere, ērupt- : ē-, ex-, ex- + rumpere, to break; see reup- in Indo-European roots.

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Latin eruptus, past participle of ērumpō ("to break out (of), to burst out (from)"), from e ("out") + rumpō ("to break").


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  • And with the gap widening and human dignity continuing to suffer, it is far more likely that only waves of hatred and violence will erupt from the abyss which now separates the rich from the poor of the world.

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