- stack cutting
- stack flue
- stacked packing
- stalagmometer
- stamped
- stamped steel
- stamping
- stand oil
- stay
- steam blanket
- steam chamber
- steam coal
- steam cock
- steam cracking
- steam cushion
- steam digger
- steam distillation
- steam heat
- steam heating
- steam inlet
- steam nozzle
- steam separator
- steam still
- steam supply
- steam test
- steam trap
- steam turbine
- steamer
- stearic acid
- steel alloy
- steel caisson
- steel man
- steel platform
- steel sharpening
- steel stack
- steel-faced
- steelworks
- steep
- steep dip
- steep slope
- steering gear
- stellated structure
- stemming cartridge
- statoscope
- Stauffer lubricator
- stay-block
- steam bath
- steam clean
- steam coil
- steam cylinder
- steam digestion
- steam drum
- steam hose
- steam injection
- steam jacket
- steam refining
- steam regulator
- Stedman packing
- steel coil
- steel container
- steel set
- steel-gray
- steep coast
- steep seam
- stellite
- stem
- stem correction
- stepped roll
- stereo plotter
- stereo-chemical
- stereographic projection
- stereomeric
- stereoscope
- sterile
- sterols
- stibial
- stibic
- sticky clay
- stiff clay
- still bottoms
- still coke
- still grease
- stinger
- stink
- stock tank
- stoichiometric combustion
- stoker
- stone block
- stone bottle
- stone meteorite
- stone putty
- stoop
- stope rejection
- stoppage
- stopped reaction
- storage
- storage factor
- storage stability
- step spectrum
- Stephanian stage