Basalt

имя существительное [геология] базальт

Большой англо-русский словарь

Basalt

noun Etymology: Latin basaltes, manuscript variant of basanites touchstone, from Greek basanitēs (lithos), from basanos touchstone, from Egyptian bḫnw a dark gray to black dense to fine-grained igneous rock that consists of basic plagioclase, augite, and usually magnetite • basaltic adjective

Энциклопедический словарь Мерриама-Вебстера