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obsidian

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obsidian

One entry found.

Main Entry: ob·sid·i·an

Pronunciation: \əb-ˈsi-dē-ən\

Function: noun

Etymology: New Latin obsidianus, from Latin obsidianus lapis, false manuscript reading for obsianus lapis, literally, stone of Obsius, from Obsius, its supposed discoverer

Date: 1796

: a dark natural glass formed by the cooling of molten lava

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