spac - spru
- spelter brazing
- spelter solder
- spent atmosphere
- spent electrolyte
- spent liquor
- spent material
- spent pickle liquor
- spent pickling-plant liquor
- spent shot
- sphalerite
- sphere in k-space
- sphere of reflections
- spherical
- spherical area of indentation
- spherical attenuation
- spherical coordinates of electron
- spherical indentation
- spherical objects
- spherical powder
- spherical pressure pad
- spherical projection
- spherical-charge forming
- spherically shaped diamond indentor
- spherically symmetric electron distribution
- spherically symmetric probability distribution
- spheroidal
- spheroidal carbide precipitate
- spheroidal cementite
- spheroidal graphite
- spheroidite
- spheroidized structure
- spheroidizing
- spheroidizing annealing
- spherulitic graphite
- spider
- spider die
- spider die cap
- spider reel
- spiegel
- spiegel cupola