A glassy stone beloved by ancient toolmakers, obsidian was found only in two prehistoric spots in Arizona prior to the 1980s. This rarely used boys name is one of the few gem names for a boy.Walls, ceilings, floors were clad in smooth obsidian and jet carved with runes, sacred hexes and texts. a volcanic glass similar in composition to granite, usually dark but transparent in thin pieces, and having a good conchoidal fracture.Unlike most volcanic rocks, obsidian does not contain phenocrysts it is, so to speak, all glassy groundmass.Define obsidian by Webster's Dictionary, WordNet Lexical Database, Dictionary of Computing, Legal Dictionary, Medical Dictionary, Dream Dictionary. For example, many early human artifacts, such as arrowheads, are made of obsidian, a volcanic glass. Looking for definition of obsidian obsidian explanation.A glass tide tinkled on the hull of the receiver, its echoing obsidian.A plain black obsidian which the Minoan craftsmen tried may have come from the Siftlik area of Cappadocia.From Longman Dictionary of Contemporary English obsidian ob‧sid‧i‧an / əbˈsɪdiən / noun a type of rock that looks like black glass Examples from the Corpus obsidian
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