bn:00058508n
Noun Concept
Categories: Obsidian, Webarchive template wayback links, Gemstones, Volcanology, Articles with short description
EN
obsidian
EN
Acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark, but transparent in thin pieces WordNet 3.0
English:
game
computer game
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EN
Acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark, but transparent in thin pieces WordNet 3.0 & Open English WordNet
Obsidian is a naturally occurring volcanic glass formed when lava extruded from a volcano cools rapidly with minimal crystal growth. Wikipedia
Type of volcanic glass. Wikipedia Disambiguation
A type of black glass produced by volcanoes. Wiktionary
WordNet 3.0 & Open English WordNet
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