🪨obsidian

noun
/əbˈsɪdiən/

Meaning

A hard, dark, glasslike volcanic rock formed by rapid solidification of lava.

Example Sentences

The knife was made from sharp obsidian.

Synonyms

volcanic glass, lava glass, natural glass, igneous rock

Antonyms

sandstone, limestone

Collocations

obsidian blade, obsidian tool, black obsidian, polished obsidian

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