felsic Syllabification: (fel·sic)Pronunciation: /ˈfelsik/Definition of felsic adjective Geology of, relating to, or denoting a group of light-colored minerals including feldspar, feldspathoids, quartz, and muscovite. Often contrasted with mafic.Origin: early 20th century: from feldspar + a contraction of silicafelsic in other Oxford dictionaries Definition of felsic in the British & World English dictionary
