Answer:
A tectonic plate is a massive, irregularly shaped slab of solid rock. (via https://pubs.usgs.gov/gip/dynamic/tectonic.html)
Explanation:
The Earth’s outer shell is divided into a patchwork of large tectonic plates that move slowly relatively to each other. (via https://www.gns.cri.nz/Home/Learning/Science-Topics/Earthquakes/Earthquakes-at-a-Plate-Boundary/Tectonic-Plates-and-Plate-Boundaries)
