from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A large syncline with superimposed smaller folds.
from the GNU version of the Collaborative International Dictionary of English
- n. A mountain range owing its origin to the progress of a geosynclinal, and ending in a catastrophe of displacement and upturning.
from The Century Dictionary and Cyclopedia
- n. A name given by J. D. Dana to a mountain having a general synclinal structure, or originated by means of a geosynclinal.
Ancient Greek to lay together + mountain. (Wiktionary)