eruption

[ ih-ruhp-shuh n ]
/ ɪˈrʌp ʃən /

noun

an issuing forth suddenly and violently; outburst; outbreak.
Geology. the ejection of molten rock, steam, etc., as from a volcano or geyser.
something that is erupted or ejected, as molten rock, volcanic ash, or steam.
Pathology.
  1. the breaking out of a rash or the like.
  2. a rash or exanthem.

Nearby words

  1. eructation,
  2. erudite,
  3. erudition,
  4. erumpent,
  5. erupt,
  6. eruptive,
  7. eruptive xanthoma,
  8. eruv,
  9. erv,
  10. ervil

Origin of eruption

1375–1425; late Middle English < Latin ēruptiōn- (stem of ēruptiō). See erupt, -ion

Related formse·rup·tion·al, adjectivenon·e·rup·tion, nounpre·e·rup·tion, nounre·e·rup·tion, noun

Can be confusederuption irruption

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for eruption


Word Origin and History for eruption

eruption

n.

early 15c., from Middle French éruption (14c.) and directly from Latin eruptionem (nominative eruptio) "a breaking out," noun of action from past participle stem of erumpere "break out, burst forth," from ex- "out" (see ex-) + rumpere "to break, rupture" (see rupture (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for eruption

eruption

[ ĭ-rŭpshən ]

n.

An appearance of a rash or blemish on the skin.
Such a rash or blemish.
The emergence of a tooth through the gums.
Related formse•ruptive (-tĭv) adj.


The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for eruption

eruption

[ ĭ-rŭpshən ]

The release of gas, ash, molten materials, or hot water into the atmosphere or onto the Earth's surface from a volcano or other opening in the Earth's surface.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.