depinisyon kahulugan
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doc Definition of obsidian
    English to English
    noun
  • acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark, but transparent in thin pieces
  • source: WordNet 3.0
  • A kind of glass produced by volcanoes. It is usually of a black color, and opaque, except in thin splinters.
  • source: Webster 1913
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