syenite
/ˈsaɪɪnaɪt/noun
mass noun
- Geology a coarse-grained grey igneous rock composed mainly of alkali feldspar and ferromagnesian minerals such as hornblende【地质】正长岩。
派生词
syenitic
adjective词源
late 18th cent.: from French syénite, from Latin Syenites (lapis) (stone) of Syene （from Greek Suēnē 'Aswan', a town in Egypt）.