Basalt rocks at the beach.Licensed from iStockPhoto
- a dark, fine-grained, usually extrusive igneous rock that is more basic than andesite, consisting chiefly of plagioclase feldspars and pyroxene: often found in vast sheets, it is the most common extrusive igneous rock
- a kind of unglazed, black pottery designed by Josiah Wedgwoodalso basaltware
Origin: earlier basaltes ; from Classical Latin a dark Ethiopian marble: term used by Pliny for basanites ; from Classical Greek basanitēs, species of slate used to test gold ; from basanos, touchstone, test (ult. ; from Egyptian bḫnw) plush -itēs, -ite
- basaltic adjective
Used by arrangement with John Wiley & Sons, Inc.
- A hard, dense, dark volcanic rock composed chiefly of plagioclase, pyroxene, and olivine, and often having a glassy appearance.
- A kind of hard unglazed pottery.
Origin: Latin basaltēs, alteration of basanītēs, touchstone, from Greek basanītēs (lithos), from basanos, of Egyptian origin.
- ba·salˈtic adjective
basalt - Cultural Definition
basalt - Science Definition
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