| traboccare di gioia | beam |
| trabocchetto | trapdoor |
| trabocco | trebuchet |
| trabucco | trebuchet |
| Trabzon | Trabzon Province |
| Trabzonspor Kulübü | Trabzonspor |
| tracannare | guzzle |
| tracce | trail |
| Tracce evolutive | Evolutionary tracks |
| traccia | mark |
| Traccia di Hayashi | Hayashi track |
| Traccia di Henyey | Henyey track |
| Traccia fantasma | Hidden track |
| tracciabilità | traceability |
| Traccialinee | Narrow lace edging |
| tracciamento | alignment |
| tracciante radioattivo | radioactive tracer |
| tracciare | mark out |
| Traceroute | Traceroute |
| Tracey Sketchit | Tracey Sketchit |
| trachea | windpipe |
| tracheale | tracheal |
| Trachee | Vertebrate trachea |
| tracheite | tracheitis |
| Trachelospermum | Trachelospermum |
| Trachelospermum jasminoides | Trachelospermum jasminoides |
| Trachemys scripta | Red-eared slider |
| Trachemys scripta elegans | Red-eared slider |
| Trachemys scripta troostii | Cumberland slider |
| tracheofite | tracheophyte |
| tracheotomia | tracheotomy |
| Trachinie | The Trachiniae |
| Trachselwald | Trachselwald |
| Trachurus trachurus | Atlantic horse mackerel |
| Trachycarpus | Trachycarpus |
| Trachypithecus auratus | Javan Lutung |
| Traci | Thracians |
| Traci Lords | Traci Lords |
| Tracia | Thrace |
| tracklist | tracklist |
| Trackpoint | Pointing stick |
| tracolla | shoulder strap |
| tracollo | debacle |
| tracoma | trachoma |
| Tractatus de Sphaera | De sphaera mundi |
| Tracy Chapman | Tracy Chapman |
| Tracy Hickman | Tracy Hickman |
| TradeDoubler | TradeDoubler |
| tradescanzia | spiderwort |
| tradimento | betrayal |
| tradire | cheat |
| tradirsi | let one's tongue get away with one |
| traditore | renegade |
