granulite Syllabification: (gran·u·lite)Pronunciation: /ˈgranyəˌlīt/Definition of granulite noun Geology a fine-grained, granular metamorphic rock in which the main component minerals are typically feldspars and quartz. Derivatives granuliticPronunciation: /ˌgranyəˌlitik/ adjective Origin: mid 19th century: from granule + -ite1granulite in other Oxford dictionaries Definition of granulite in the British & World English dictionary