andesite

play
noun an·des·ite \ˈan-di-ˌzīt\

Definition of andesite

  1. :  an extrusive usually dark grayish rock consisting essentially of oligoclase or feldspar

andesitic

play \ˌan-di-ˈzi-tik\ adjective

Origin and Etymology of andesite

German Andesit, from Andes


First Known Use: 1837


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