basalt

play
noun ba·salt \bə-ˈsȯlt, ˈbā-ˌ\

Definition of basalt

  1. :  a dark gray to black dense to fine-grained igneous rock that consists of basic plagioclase, augite, and usually magnetite

basaltic

play \bə-ˈsȯl-tik\ adjective

Origin and Etymology of basalt

Latin basaltes, manuscript variant of basanites touchstone, from Greek basanitēs (lithos), from basanos touchstone, from Egypt bḫnw


First Known Use: 1601


BASALT Defined for English Language Learners

basalt

play
noun ba·salt \bə-ˈsȯlt, ˈbā-ˌ\

Definition of basalt for English Language Learners

  • : a type of dark gray to black rock



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