The phrase "tectonic shift" refers to a big and sudden change or shift in a particular situation or field, much like the movement of Earth's tectonic plates causing earthquakes and reshaping land. Full definition
That means there is little basis to the case that some kind of tectonic shift in the lives of lawyers has taken place. (lawyerist.com)
Middle Valley - 2,400 m, Planned studies of tectonic shifts, whale song and vents; 2. (sciencenews.org)
At a time when the education of teachers is undergoing tectonic shifts, this work by Grossman, Loeb, and their colleagues represents an invaluable contribution. (hepg.org)