- volatile matter
- warp
- warped
- warped surface
- wash pan
- wash primer
- wash thinner
- wash-ability
- washed clay
- washed ore
- washery
- washing classifier
- washing column
- washing loss
- washing rate
- washing soda
- washings
- washover string
- wastage
- waste chute
- waste dump
- waste fuel
- waste liquid
- waste material
- waste oil
- waste product
- watch oil
- water absorption
- water demineralizing
- water electrode
- water gas
- water hardening
- water jacket
- water jacketed
- water layer
- water level
- water loss
- water number
- water opal
- water paint
- water quench
- water quenching
- water recovery
- water scrubber
- water seal
- water stain
- water still
- water string
- water table
- water trap
- water treating
- vousenite
- vuggular
- vuggy
- vugular porosity
- vulcanism
- vulcanization activators
- vulpinite
- Wacker process
- wagnerite
- walk
- wall salpetre
- wall scraper
- wall scratcher
- wallboard
- walled shaft
- waluewite
- wapplerite
- warfarin
- warner
- warrenite
- warwickite
- wash
- wash oil
- wash-over
- washed
- washed sulphur
- washing device
- washing filter
- washing tower
- washing trommel
- washout
- waste
- waste bin
- waste cock
- waste disposal
- waste fill
- waste lye
- waste pipe
- waste recovery
- water analysis
- water disposal
- water drill
- water gap
- water hammer
- water horizon
- water injection
- water insoluble
- water knockout
- water lime