Definition of andesite
: an extrusive usually dark grayish rock consisting essentially of oligoclase or feldspar
andesiticplay \ˌan-di-ˈzi-tik\ adjective
Recent Examples of andesite from the Web
NASA scientists said the Sojourner rover’s first close-up inspection of a Martian rock produced a surprise: the quartz-heavy object resembled andesite, a common volcanic rock found on Earth.
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Origin and Etymology of andesite
German Andesit, from Andes
First Known Use: 1837See Words from the same year
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