Definition of syenite in English:


Syllabification: sy·e·nite
Pronunciation: /ˈsīəˌnīt


  • A coarse-grained gray igneous rock composed mainly of alkali feldspar and ferromagnesian minerals such as hornblende.
    More example sentences
    • The southern Zomba area consists mainly of syenite surrounded by a periphery of alkaline granite.
    • A violet, coarse-grained, porphyritic quartz syenite, which makes up large parts of the pluton, was collected for dating.
    • The selective removal of these minerals resulted in a change of the composition of the magma to one near that of the rock syenite.



Pronunciation: /ˌsīəˈnitik/
More example sentences
  • Of far less importance are occurrences in gneisses and amphibolites, in small plutons derived from syenitic and gabbroic magmas, and in certain contact-metamorphic rocks.
  • In the central part of the intrusion, some small granitic aplite dykes intrude the syenitic rocks.
  • Several pools of syenitic magma were separated from the main body of the melt.


late 18th century: from French syénite, from Latin Syenites (lapis) '(stone) of Syene' (from Greek Suēnē 'Aswan', a town in Egypt).

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