- stadia constant
- stadia distance
- Staeger test
- stage extraction
- stage flotation
- stage reduction
- stain
- stainless oil
- stale beer
- stall
- stamp
- stamped ore
- standage
- standard colour
- standard make
- standard meter
- standard method
- standard mineral
- standard production
- standard screw
- standard section
- standard specification
- standing idling
- standing pulley
- standing valve
- stannary
- stannekite
- stannic
- stannic oxide
- stanniferous
- stannous
- staple
- star bit
- star coupling
- spongerubber
- spontaneous generation
- spontaneous nucleation
- spontaneous potential
- spot analysis
- spot cure
- Spot market
- spotted structure
- spray chamber
- spray nozzle
- spray pump
- spray washer
- sprayer
- spraying
- spraying coating
- spreader roll
- spring hanger
- spring loaded
- spring pole
- spring washer
- spruce ocher
- sprue opening
- sprung weight
- spud mud
- spudding
- square bolt
- square kelly
- square perch
- square shaft
- starch gum
- starch paste
- startability
- starter fluid
- starter ring
- starting air
- starting handle
- starting output
- starting torque
- state picker
- static
- static bed
- static correction
- static correlation
- static gravimeter
- static metamorphism
- static rate
- static test
- stating rate
- station spacing
- stationary mass
- stationary rig
- statistical test
- squeeze
- squeeze cementing
- squeeze head
- squeeze out
- squeezer
- squib
- stabilization column
- stabilized dune
- stabilized gasoline
- stabilized latex
- stabilized zirconia
- stabilizer hydrocarbon
- stabilizer tower
- stabilizing column