[trahyd-nt] 
| 1. | a three-pronged instrument or weapon. |
| 2. | Roman History. a three-pronged spear used by a retiarius in gladiatorial combats. |
| 3. | Classical Mythology. the three-pronged spear forming a characteristic attribute of the sea god Poseidon, or Neptune. |
| 4. | a fish spear having three prongs. |
| 5. | (initial capital letter ) Military. a 34-ft (10-m) submarine-launched U.S. ballistic missile with eight to ten warheads and a range of 6500 mi. (10,459 km). |
| 6. | Also, tri⋅den⋅tal [trahy-den-tl] . having three prongs or tines. |