Meaning of obsidian by Wiktionary Dictionary
- ( UK ) IPA: /ˌɒbˈsɪd.i.ən/
- ( US ) IPA: /ˌɑbˈsɪdiən/
- obsidian n. [L. Obsidianus lapis, so named, according to Pliny, after one Obsidius, who discovered it in Ethiopia: cf. F. obsidiane, obsidienne. The later editions of Pliny read Obsianus lapis, and Obsius, instead of Obsidianus lapis, and Obsidius.] ( Min. ) A kind of glass produced by volcanoes. It is usually of a black color, and opaque, except in thin splinters.
☞ In a thin section it often exhibits a fluidal structure, marked by the arrangement of microlites in the lines of the flow of the molten mass.
Explanation of obsidian by Wordnet Dictionary
Definition of obsidian by GCIDE Dictionary