| / English Dictionary |
OBSIDIAN
| Pronunciation (US): |  | (GB): | |
I. (noun)
Sense 1
Meaning:
Acid or granitic glass formed by the rapid cooling of lava without crystallization; usually dark, but transparent in thin pieces
Classified under:
Hypernyms ("obsidian" is a kind of...):
volcanic glass (a kind of natural glass produced when molten lava cools very rapidly)
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