noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A topographic feature which is composed of sedimentary layers in a concave formation, but may not actually form a real syncline (i.e., the youngest rocks may not be exposed in the middle).

Antonyms

All antonyms

antiform

Etymology

From syn- + form.

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