erupt

[ih-ruhpt]
verb (used without object)
1.
to burst forth: Molten lava erupted from the top of the volcano. vent.
2.
(of a volcano, geyser, etc.) to eject matter.
3.
to break out of a pent-up state, usually in a sudden and violent manner: Words of anger erupted from her.
4.
to break out in a skin rash: Hives erupted all over his face and hands.
5.
(of teeth) to grow through surrounding hard and soft tissues and become visible in the mouth.
verb (used with object)
6.
to release violently; burst forth with: She erupted angry words. vent.
7.
(of a volcano, geyser, etc.) to eject (matter).

Origin:
1650–60; < Latin ēruptus burst forth, broken out (past participle of ērumpere), equivalent to ē- e-1 + ruptus, past participle of rumpere to break, rupture

eruptible, adjective
preerupt, verb (used without object)
reerupt, verb (used without object)
unerupted, adjective
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
erupt (ɪˈrʌpt)
 
vb
1.  to eject (steam, water, and volcanic material such as lava and ash) violently or (of volcanic material, etc) to be so ejected
2.  (intr) (of a skin blemish) to appear on the skin; break out
3.  (intr) (of a tooth) to emerge through the gum and become visible during the normal process of tooth development
4.  (intr) to burst forth suddenly and violently, as from restraint: to erupt in anger
 
[C17: from Latin ēruptus having burst forth, from ērumpere, from rumpere to burst]
 
e'ruptible
 
adj
 
e'ruption
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

erupt
1650s, of diseases, etc., from L. erupt-, pp. stem of erumpere (see eruption). Of volcanoes, from 1770. Related: Erupted; erupting.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

erupt e·rupt (ĭ-rŭpt')
v. e·rupt·ed, e·rupt·ing, e·rupts

  1. To break through the gums in developing. Used of teeth.

  2. To appear on the skin. Used of a rash or blemish.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Most of the world's volcanoes probably erupt under the oceans.
Our patience may also dry up when, week after week, new troubles erupt.
Attempt to impose a new order from the outside and violence is all but sure to
  erupt.
Huge flames erupt beneath your rocket as it blasts off.
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