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WordNet 3.0Copyright Princeton University
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Volcanic glass.

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Usage examples (36)
  • The hillside was still dotted with chunks of obsidian from the ancient volcanic eruption.
  • Glass in the form of a volcanic residue such as obsidian is found in nature.
  • The main obsidian mines were those of Zinap√©cuaro ( "obsidian place").
  • In this area of Jalisco, the typical country-workshop approach to shaping obsidian is dangerous.
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The Open Dictionary of English is a collaborative project, based on Open Source materials, LearnThat resources, and partner APIs.
We give special thanks to our LearnThat volunteers, as well as Princeton University and Wiktionary for their Open Source word data. We're also grateful for the support given by Google, Wordnik.com, Dictionary.com, Stands4.com and YouTube, OEDILF.com, Kylescholz.com, Best-Practice.com, Forvo.com, as well as the generous Creative Commons community.