syenite

syenite
[ˈsʌɪənʌɪt]
noun
  1. [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
syenitic
adjective
语源
  1. late 18th cent.: from French syénite, from Latin Syenites (lapis) (stone) of Syene (from Greek Suēnē 'Aswan', a town in Egypt)
英语宝典
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