U.S. National Library of Medicine
The ash, dust, gases, and lava released by volcanic explosion. The gases are volatile matter composed principally of about 90% water vapor, and carbon dioxide, sulfur dioxide, hydrogen, carbon monoxide, and nitrogen. The ash or dust is pyroclastic ejecta and lava is molten extrusive material consisting mainly of magnesium silicate. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
The numerical value of volcanic eruptions in Chaldean Numerology is: 7
The numerical value of volcanic eruptions in Pythagorean Numerology is: 9
Sample Sentences & Example Usage
The forecast is based on the key drivers of global climate, but it doesn't include random events, such as large volcanic eruptions, which can cause a temporary cooling effect.
As Pangea split there were huge volcanic eruptions, about 200 million years ago, and these plunged the world into chaos: environmental destruction and rapid climate swings, the big amphibians couldn't cope well and many species went extinct, but dinosaurs and mammals made it through.
Images & Illustrations of volcanic eruptions
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"volcanic eruptions." Definitions.net. STANDS4 LLC, 2017. Web. 27 Jun 2017. <http://www.definitions.net/definition/volcanic eruptions>.