Tra"chyte (?), n. [Gr. rough, rugged: cg. F. trachyte.] Geol.
An igneous rock,usually light gray in color and breaking with a rough surface. It consists chiefly of orthoclase feldspar with sometimes hornblende and mica.
© Webster 1913.
Log in or register to write something here or to contact authors.
Need help? firstname.lastname@example.org