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dacite
noun
da·cite
\ˈdāˌsīt\
Definition of dacite
-s
: an extrusive rock that is sometimes partly glassy and is composed of plagioclase and quartz with biotite, hornblende, or pyroxene
dacitic
\(ˈ)dā¦sitik\ adjectiveExplore M-W
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Origin and Etymology of dacite
German dazit, from Dazien Dacia + German -it -ite
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