First Known Use: circa 1796
Dictionary
syenite
noun sy·e·nite \ˈsī-ə-ˌnīt\
Definition of SYENITE
: an igneous rock composed chiefly of feldspar
— sy·e·nit·ic \ˌsī-ə-ˈni-tik\ adjective
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Origin of SYENITE
Latin Syenites (lapis) stone of Syene, from Syene, ancient city in Egyptian
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