Meaning & use
obsidian
Last updated
A hard, dark, glasslike volcanic rock formed when lava cools very quickly.
See it in a sentence
Ancient peoples chipped obsidian into sharp blades and arrowheads.
The jewelry was carved from a single piece of black obsidian.
A note on using this word
Prized historically for its ability to be shaped into extremely sharp edges, sharper than many metal blades.
Words with a similar meaning
volcanic glass
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