basalt /ˈbasɔːlt, ˈbas(ə)lt/

b

I. noun [ mass noun]

1. a dark fine-grained volcanic rock that sometimes displays a columnar structure, typically composed largely of plagioclase with pyroxene and olivine.
2. a kind of black stoneware developed by Josiah Wedgwood.
II. derivatives

basaltic /bəˈsɔːltɪk /
adjective


– origin early 17th cent. (in the Latin form): from Latin basaltes (variant of basanites), from Greek basanitēs, from basanos ‘touchstone’.

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