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obsidian

obsidian

12 7.9
A hard dark rock made when lava cools quickly and becomes like glass with a smooth shiny surface
  • noun
  • /əbˈsɪdiən/
translation icon : obsidiana
  • The handle was dull black; the blade was obsidian and shone in glints like broken glass.
  • obsidian blade
  • obsidian tools
  • obsidian spear point

So for example, an Obsidian scalpel cuts through flesh much easier with much less force than say, I don't know, a plushie.

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Examples

  • I held up a piece of flaked obsidian for her.

    Fiction book (2001)
  • During the trip, she discovered a number of large obsidian blades at the bottom of a natural swimming hole.

    Academic text (2006)
  • Oh, we just made a huge Obsidian blade right here.

  • And so those are islands of Obsidian crystal sitting in a matrix of Obsidian glass.

  • The fill material commonly included various artifacts: bone points, hunks of obsidian, stone axes.

    Academic text (2006)
  • Other findings include broken but restorable vessels, figurine fragments, and obsidian lance points.

    Academic text (2006)
  • His beard, squared off about three inches beneath his jaw, glistened like the obsidian rock of his homeland.

    Fiction book (1991)
  • Helen Pollard and Thomas Vogel discuss the utilization of obsidian sources in the independent Tarascan state.

    Academic text (1997)
  • At every jade prospect, flaked obsidian from imported stone tools is found in the mounds of jade rubble.

    Academic text (1992)
  • The indigenous people used obsidian to craft sharp tools and weapons.

Synonyms

volcanic glass
vsobsidian
  • Specialized
1 6.7

A hard shiny rock made when hot lava cools and hardens very fast

is the dark, hard variety of that material
natural glass
vsobsidian
  • Specialized
6.1

A shiny rock that forms when lava cools very fast

is one specific dark, hard volcanic type within that broader group

How Glassy

obsidian
12 7.9
tachylite
  • Specialized
9.9
basalt
  • Specialized
8 7.2

Surface Forms

obsidian singular
obsidians plural

Etymology

Obsidian comes from the Latin name obsidianus, which one story says was named after a Roman man called Obsidius who brought this dark volcanic glass to Rome. That's why obsidian is a hard, shiny rock that looks like 'glass' and can have very sharp edges.