adj ·Rare ·Advanced level

Definitions

Adjective

1. 1
   Having three angles and three sides, triangular.
2. 2
   Of or pertaining to a crystal system with three equal and equally inclined but not perpendicular axes.
3. 3
   Relating to the trigone

Adjective

1. 1
   having threefold symmetry wordnet

Synonyms

All synonyms

cuneiformdeltoidrhombohedralrhombohedralthree dimensionaltriangular

Etymology

From Latin trigōnālis (“triangular”), equivalent to trigon + -al.

Related phrases

crystal system

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