from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Related to, or caused by an earthquake and/or the dynamics of tectonic plates of a planet's crust.
from The Century Dictionary and Cyclopedia
- Connected with the earth's structure so as to be related also to earthquakes: applied by W. H. Hobbs to fault-lines, at whose intersection earthquakes are believed to be specially frequent.
From seismo- + tectonic. (Wiktionary)