from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of or relating to the shape, structure, and arrangement of the rock masses resulting from structural deformation of the earth's crust.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Of or pertaining to geotectonics.
from The Century Dictionary and Cyclopedia
- Relating to the structure or tho arrangement of the materials composing the crust of the earth.
geo- + tectonic (Wiktionary)