theo - tint
- thole
- Thomas converter
- Thomson bridge
- Thomson effect
- Thomson meter
- thong
- thoriate
- thorium
- thoron
- thorough bend
- thorough drying
- thorough repair
- thoroughfare
- thre-jawed
- thre-piece rim
- thread
- thread angle
- thread base / bottom
- thread beam
- thread caliper / gauge
- thread crest
- thread depth
- thread groove
- thread head
- thread micrometer
- thread nipple
- thread of the current
- thread on
- thread pitch
- thread plug gauge
- thread rolling
- thread sewing
- thread size
- thread templet
- thread-bulging machine
- thread-cutting
- thread-pitch diameter
- thread-shaped
- threaded
- threaded / thread cap / plug
