Definitions for "Tectonic plate"
a segment of the lithosphere.
An area of the earth's crust which moves during geological time resulting in continental drift and other major changes in the topography of the surface of the globe.
Large section of the earth's crust, either oceanic or continental, that is in motion due to forces within the earth. Tectonic activity in Alaska is due to interaction between the Pacific plate, and the North American plate.