basalt [noun]

Definition of basalt:

the commonest type of solidified lava; a dense dark grey fine-grained igneous rock that is composed chiefly of plagioclase feldspar and pyroxene

Synonyms of basalt:


Opposite/Antonyms of basalt:

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Sentence/Example of basalt:

The hills which bound the valley of the creek are basalt, sandstone, and schist.