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pillow lava
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noun Geology.
lava in the form of an agglomeration of rounded, pillow-shaped masses, the result of subaqueous or subglacial volcanic eruption.
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Origin of pillow lava
First recorded in 1900ā05
Words nearby pillow lava
pillow, pillow block, pillowcase, pillow fight, pillow lace, pillow lava, pillow sham, pillow sword, pillow talk, pillowy, pill popper
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, Ā© Random House, Inc. 2023
How to use pillow lava in a sentence
British Dictionary definitions for pillow lava
pillow lava
noun
lava that has solidified under water, having a characteristic structure comprising a series of close-fitting pillow-shaped masses
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
Ā© William Collins Sons & Co. Ltd. 1979, 1986 Ā© HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for pillow lava
pillow lava
[ pÄlā²Å ]
Lava that forms from an underwater eruption and is characterized by pillow-shaped masses. Pillow lava forms when hot lava is suddenly exposed to cold water, forming a sacklike membrane that is filled with additional cooling and solidifying lava. The outer membrane is usually finer grained than the inner lava.
The American HeritageĀ® Science Dictionary
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