Definition of Obsidean
Obsidian, a hard, dark-coloured rock of a glassy structure found in
lava, which breaks with conchoidal fracture.
- Wikipedia
Ob*sid"i*an (?), 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.
&fist; 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.
- Webster's Unabridged Dictionary (1913)
- (mineral) a type of black glass produced by volcanos
- (Poetic) black
- The Nuttall Encyclopedia
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The correct Spelling of this word is: Obsidian
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