Definition of "syenite" [sy•e•nite]

• An igneous rock composed primarily of alkali feldspar together with other minerals, such as hornblende. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Is it real science -- or what is it -- which would label syenite"
• "Its quarries, with those of Rohannou, were the principal ones of Egypt; they supplied a certain kind of red granite called syenite, out of which were cut the obelisks, monolithic temples, the colossus, etc."
• "It is a portion of the great marine glacial drift of the midland counties of England, and contains blocks, some of large size, not only of the Oolite of the neighbourhood, but of Chalk and other rocks transported from still greater distances, such as syenite, basalt, quartz, and New Red Sandstone."