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Definition of obsidian
: a dark natural glass formed by the cooling of molten lava
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Recent Examples of obsidian from the Web
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Known as obsidian in the real world, dragonglass kills white walkers and also creates them if stabbed into a human heart by the Children of the Forest.
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A few of the victims were bound before death, and some have arrowheads of stone and obsidian embedded in their bones.
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Drops of scarlet blood on a hard tarmac black as obsidian.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'obsidian.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of obsidian
New Latin obsidianus, from Latin obsidianus lapis, false manuscript reading for obsianus lapis, literally, stone of Obsius, from Obsius, its supposed discoverer
OBSIDIAN Defined for English Language Learners
obsidian
playDefinition of obsidian for English Language Learners
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: a dark natural glass that forms when lava cools
OBSIDIAN Defined for Kids
obsidian
playDefinition of obsidian for Students
: a smooth dark rock formed by the cooling of lava
Learn More about obsidian
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See words that rhyme with obsidian Britannica.com: Encyclopedia article about obsidian
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