| Trihoral | a. [ Pref. tri- + horal. ] Occurring once in every three hours. [ 1913 Webster ] |
| Trigonal | a. Having three angles, or corners; triangular; [ 1913 Webster ] |
| trigonal; trigonous | มีสามมุม [พฤกษศาสตร์ ๑๘ ก.พ. ๒๕๔๕] |
| Trigonalaspekt { n } [ math. ] | trine [Add to Longdo] |