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obsidian
noun [U] /ɒbˈsɪd.i.ən/
/ɑːb-/ Definition
(Definition of obsidian noun from the Cambridge Advanced Learner's Dictionary & Thesaurus
© Cambridge University Press)
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SMART Thesaurus: Geology: types of rock
Synonyms and related words:
- alabaster noun
- bedrock noun (ROCK)
- borax noun
- boulder noun
- chalk noun
- conglomerate noun (ROCK)
- feldspar noun
- flinty adjective
- gypsum noun
- haematite noun
- lava noun
- marcasite noun
- metamorphic adjective
- pumice (stone) noun
- quartz noun
- sandstone noun
- shale noun
- silica noun
- slate noun (ROCK)
- soapstone noun
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