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.
the breaking out of a rash or the like.
a rash or exanthem.
- e·rup·tion·al, adjective
- non·e·rup·tion, noun
- pre·e·rup·tion, noun
- re·e·rup·tion, noun
- eruption , irruption
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use eruption in a sentence
Palladino, she said, was being used to address “bimbo eruptions,” and had been successful at keeping a number of the alleged scandals out of print.Jack Palladino, aggressive sleuth who worked for Bill Clinton campaign, dies at 76 | Harrison Smith | February 2, 2021 | Washington Post
The heat eventually escaped through radiation and volcanic eruptions.Rumbles on Mars Raise Hopes of Underground Magma Flows | Robin George Andrews | February 1, 2021 | Quanta Magazine
Those eruptions release carbon dioxide to the atmosphere and produce fresh new rock for weathering.How the Earth-shaking theory of plate tectonics was born | Carolyn Gramling | January 13, 2021 | Science News
Steamboat also seemed to show a seasonal eruption cycle, bursting forth more often during the summer than in the winter.Reawakened Yellowstone geyser isn’t a sign of imminent explosion | Carolyn Gramling | January 11, 2021 | Science News
In terms of sheer number of aerosols sent into the stratosphere, the Australian plumes were on par with the strongest volcanic eruptions in the last 25 years.Towering fire-fueled thunderclouds can spew as many aerosols as volcanic eruptions | Carolyn Gramling | December 15, 2020 | Science News
The rage that Marvin has embodied, a man on the edge of eruption, is always a badly wounded man.The Story Behind Lee Marvin’s Liberty Valance Smile | Robert Ward | January 3, 2015 | THE DAILY BEAST
The animals are supposedly evacuating themselves in anticipation of an eruption at the park, which sits on a huge volcanic system.Turns Out, a Video of Bison Purportedly Fleeing Yellowstone Is a Hoax | Timothy Lesle | April 8, 2014 | THE DAILY BEAST
That video of bison fleeing Yellowstone in anticipation of a volcanic eruption?Turns Out, a Video of Bison Purportedly Fleeing Yellowstone Is a Hoax | Timothy Lesle | April 8, 2014 | THE DAILY BEAST
His controversial tweet marks yet another controversial eruption by a Republican congressman around an Obama speech to Congress.
His views are not shared by Vivien Magdy, a 25-year-old who lost her fiancé during another notorious eruption of violence.
An extraordinary eruption of mount Vesuvius commenced, which in ten days had advanced ten miles from its original source.
An eruption of mount tna, which extended its ravages four leagues around, and buried several persons alive.
A long, long time ago, the boy's father cannot tell how many years have passed, there was a terrible eruption.Alila, Our Little Philippine Cousin | Mary Hazelton Wade
Great eruption of the Scaptar Jokul, in Iceland, commenced, and continued several days (see 18th).
No eruptive mountains, nor any traces of recent volcanic eruption, have yet been observed in any part of Australia.
Scientific definitions for eruption
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.