maficEnglishOxford Dictionary of Englishmafic /ˈmafɪk / ▸ adjective Geology relating to or denoting a group of dark-coloured, mainly ferromagnesian minerals such as pyroxene and olivine. Often contrasted with felsic – ORIGIN early 20th century: blend of magnesium and a contracted form of ferric.
EnglishOxford Dictionary of English
