tran - turn
- trouble
- trouble signal
- trouble-free
- trouble-free assurance test
- trouble-free control system
- trouble-free operation
- trouble-free operational cycling
- trouble-free quality assurance test
- troubleproof
- troubleshoot
- troubleshooter
- troubleshooting
- troubleshooting code
- troubleshooting flowchart
- troubleshooting phase
- troublesome resonant frequency
- trough
- troughed table
- trowel
- TRP
