noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A linear geosynclinal belt lying between continental and oceanic cratons, and having internal volcanic belts (eugeosynclinal) and external nonvolcanic belts (miogeosynclinal). Also known as geosynclinal couple; primary geosyncline.

Etymology

From ortho- + geosyncline.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.