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{%type%} Definitions

WordNet 3.0Copyright Princeton University
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Short "hint"

n. - A dark grey volcanic rock.

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Usage examples (32)
  • The Miocene volcanic rocks are mostly andesite, basalt, and pyroclastic rocks.
  • These volcanoes develop from magma of basaltic to intermediate composition (andesite).
  • Miocene basalt, andesite, pyroclastic, and marine sedimentary rocks predominate in this subsection.
  • Being in hard andesite rock from top to bottom, the ground does not swell and crowd upon the timbers.
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