pyroxenitePronunciation: /pʌɪˈrɒksɪnʌɪt/Definition of pyroxenite noun [mass noun] Geology a dark, greenish, granular intrusive igneous rock consisting chiefly of pyroxenes and olivine. Origin: mid 19th century: from pyroxene + -ite1pyroxenite in other Oxford dictionaries Definition of pyroxenite in the US English dictionary
