spac - stat
- space charge layer
- space chemistry
- space formula
- space group
- space isomerism
- space lattice
- space model
- space polymer
- space reflection
- space time yield
- space velocity
- spacing
- spanish white
- spar varnish
- sparger
- spark
- spark discharge
- spark explosion method
- spark spectrum
- sparteine
- spathic iron ore
- spatial formula
- spatial frequency
- spatula
- special polymer
- specific activity
- specific charge
- specific cohesion
- specific conductivity
- specific energy
- specific gravity
- specific gravity balance
- specific gravity bottle
- specific heat
- specific heat at constant pressure
- specific heat at constant volume
- specific ionization
- specific reaction rate constant
- specific reagent
- specific refraction
