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.]

andesite

(ˈændɪˌzaɪt) or

andesyte

n
(Geological Science) a fine-grained tan or grey volcanic rock consisting of plagioclase feldspar, esp andesine, amphibole, and pyroxene
[C19: from Andes + -ite1]

an•des•ite

(ˈæn dəˌzaɪt)

n.
a dark volcanic rock composed essentially of plagioclase feldspar and one or more mafic minerals.
[1840–50; after the Andes; see -ite1]
an`de•sit′ic (-ˈzɪt ɪk) adj.

andesite

A dark, fine-grained rock, taking its name from the Andes Mountains.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.andesite - a dark grey volcanic rockandesite - a dark grey volcanic rock    
igneous rock - rock formed by the solidification of molten magma