Akademik
obsidian
1.
noun
/ˌɒbˈsɪd.i.ən,ˌɑbˈsɪdiən/
a type of black
glass
produced by volcanos
2.
adjective
/ˌɒbˈsɪd.i.ən,ˌɑbˈsɪdiən/
black
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