spur - ster
- spur gear
- spurious frequency
- spurious oscillation
- spurious printing
- spurious response
- spurious response rejection
- spurious sidebands
- spurious signal
- sputter
- sputtering
- sputtering resistor
- sQ system
- squamous
- square
- square angle
- square measure
- square nut
- square pulse
- square root
- square washer
- square wave
- square-head screw
- square-law detection
- square-section belt
- square-wave generator
- square-wave voltage
- squared off
- squareness
- squareness ratio
- squaring machine
- squeegee
- squeezed
- squeezing
- squeezing mandrel
- squegging
- squegging oscillator
- squelch amplifier
- squelch circuit
- squelch signal
- squelch tuning
