- statistical equilibrium
- statistical error
- statistical fluctuation
- statistical frequency
- statistical lag
- statistical sum
- statohm
- stator armature
- stator winding
- statT
- statvolt
- statweber
- squaring circuit
- squeeze section
- squeezed light
- squeezed state
- squegging oscillator
- squelch circuit
- squint
- stability criteria
- stabilized winding
- stabilizing winding
- stable environment
- stable refrigerant
- stack
- stacked loops
- stagnant refrigerant
- stagnation temperature
- stake
- stalagmometer
- stamped grille
- statV
- steady noise
- steady state
- steady-brace
- steam condensation
- steam consumer
- steam dome
- steam exhaust
- steam humidification
- steam jet
- steam separator
- steam supply
- steamproof insulation
- steel fin
- steeloscope
- Stefan number
- stellar association
- stellar astronomy
- stellar evolution
- step change
- step response
- step tariff
- stator plate
- stattesla
- statWb
- steady cooling
- steady-arm
- steam consumption
- steam cycle
- steam diffusion
- steam distribution
- steam injection
- steam line
- steam point
- steam table
- steel container
- steel wool
- steelometer
- steelyard
- stellar atmosphere
- stellar population
- stellar radiation
- stellar spectra
- stem correction
- step angle
- step freezing
- stepwise compressor
- stereocamera
- stereograph
- stereomicroscope
- stereophonic sound
- stereoscope
- sterilizer
- stigmatic
- Stirling cycle
- storage factor
- storage height
- storage life
- storage tank
- storage test
- store
- stepping regulator
- sterba curtain
- stereophonic
- stereophotography
- stereoscopic effect
- stiffening member
- still
- stimulated