andesite
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an·de·site
(ăn′dĭ-zīt′)n.
A gray, fine-grained volcanic rock consisting chiefly of plagioclase feldspar and one or more mafic minerals.
[After the Andes.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
andesite
(ˈændɪˌzaɪt) orandesyte
n
(Geological Science) a fine-grained tan or grey volcanic rock consisting of plagioclase feldspar, esp andesine, amphibole, and pyroxene
[C19: from Andes + -ite1]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
an•des•ite
(ˈæn dəˌzaɪt)n.
a dark volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals.
an`de•sit′ic (-ˈzɪt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
andesite
A dark, fine-grained rock, taking its name from the Andes Mountains.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
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| Noun | 1. |  andesite - a dark grey volcanic rock igneous rock - rock formed by the solidification of molten magma |
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