thru - trac
- thumb knob
- thumb operated control stick
- thumb seat
- thumb switch
- thunder flash
- thunderstorm cell blip
- thunderstorm protection
- thyristor
- tickers hardness number
- tidal day
- tidal gravity correction
- tidal wave
- tide
- tide of battle
- tie beam
- tie rod yoke
- tight connection
- tight packing
- tightened evenly
- tightening
