- stepped gear
- stepped tray
- stereotyping
- sterilization
- sterilized oil
- stibnite
- sticky formation
- stillingia oil
- stinkstone
- stoadite
- stock blender
- stock jobbing
- Stoddard solvent
- stoichiometric
- stone net
- stop ring
- stop valve
- stoping
- stopping distance
- stibious
- stiffener
- still battery
- still gas
- still residue
- stink-damp
- stinking schist
- stirring rod
- stitch
- stock column
- stock soap
- stoichiometric composition
- stoichiometry
- stoke
- stone river
- stone shaft
- stoneware
- stoper
- storability
- storage loss
- stored heat
- storing
- storm choke
- stovepipe welding
- stowage
- stower
- stowing
- stowing machine
- straddle packer
- straddle shot
- straight asphalt
- straight chain
- straight edge
- straight reaming
- straight resin
- straight well
- straight-run
- strain gage
- strain limit
- strain wave
- strainer cap
- straining funnel
- strand
- strand flat
- stranded
- stranding
- strangler
- strap
- strata
- strata meter
- strath
- strath terrace
- stratification
- stratification deposition
- stratified deposit
- stratified structure
- stratigraphic column
- stratigraphic correlation
- stick sulfur
- sticky oil
- still jacket
- still wax
- stillman
- stirred reactor
- stirring test
- stitching oil
- stock corporation
- stock solution
- stockwork
- stone coal
- stone packing
- stone ring
- stone wax
- stop cock
- stopcocking
- stratigraphic division
- stratigraphic gap
- stratigraphic position
- stratigraphic section
- stratigraphic seperation
- stratigraphic trap