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Word of the Day Tuesday, June 9, 2026

obsidian

/ɒbˈziːdiən/ noun · British & US
Valid in UKValid in US
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What does obsidian mean?

noun

A naturally occurring volcanic glass formed by the rapid cooling of lava flows, typically with a smooth, glossy appearance. Obsidian is often used in jewelry and decorative objects.

Example

"The artisan carefully crafted a pendant from a piece of obsidian, its smooth surface reflecting the light."

Definition generated by AI and curated by RJS Tech Solutions LLP.

Synonyms for obsidian

Rhymes with obsidian

Etymologically related