These are the rumblings of slow-motion earthquake, a tectonic shift that may well redefine what it means to be a Republican.
The 68-million-year-old remnants of dinosaur feet were pushed upward by tectonic activity.
These tectonic plates are likely to shift gradually, and this is part of it.
1650s, "of or relating to building," from Late Latin tectonicus, from Greek tektonikos "pertaining to building," from tekton (genitive tektonos) "builder, carpenter," from PIE root *tek- "to make" (see texture). The geological sense is recorded from 1894.