(n.) A kind of glass produced by volcanoes. It is usually of a black color, and opaque, except in thin splinters.
Example Sentences:
(1) ‘The job is fun, but should never be more than 40 hours per week’ Veteran game designer Chris Avellone, now co-owner of Obsidian Entertainment, focuses on downscaling.
(2) In Mesoamerica, the Aztec empire promoted a militaristic state ideology and developed extensive trade networks to secure valued materials, including obsidian and exotic and symbolically powerful materials such as the shimmering, iridescent feathers of the quetzal bird.
(3) The victims are splayed on a column at the top of a pyramid, and a priest cracks their ribcage open with an obsidian knife to pluck out their still-beating hearts.
(4) A method for analysis of Ni concentrations in tissues is described, which involves (a) tissue dissection with metal-free obsidian knives, (b) tissue homogenization in polyethylene bags by use of a "Stomacher" blender, (c) oxidative digestion with mixed nitric, sulfuric, and perchloric acids, and (d) quantitation of Ni by electrothermal atomic absorption spectrophotometry with Zeeman background correction.
(5) It will come in three colours: black, grey and obsidian and goes on sale in 2018.
(6) It’s a fun job, but it shouldn’t be an exploitative one Chris Avellone, Obsidian Entertainment The need to appease both parties can lead to blow-outs.