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block lava

noun, Geology
1.
basaltic lava in the form of a chaotic assemblage of angular blocks; aa.
Origin
1910-1915
1910-15
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for block-lava

block lava

noun
1.
volcanic lava occurring as rough-surfaced jagged blocks
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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