sun- - symm
- sun-pumped laser
- sun-seeker
- sunbeam
- sundial
- sundown
- sunk screw
- sunlight
- sunlight collector
- sunlight spot
- sunlit face
- sunlit surface
- sunrise
- sunrise colors
- sunset
- sunset colors
- sunset glow
- sunshine recorder
- sunspot
- sunspot activity
- sunspot configuration
- sunspot cycle
- sunspot development
- sunspot group
- sunspot maximum
- sunspot number
- sunspot prominence
- sunspot proper motion
- sunspot relative number
- sunspot seismology
- sunspot spectrum
- sunspot theory
- sunspot umbra
- sunspot zone
- sunward tail
- super-aerodynamic flight
- super-aerodynamic flow
- super-conducting energy gap
- super-conductive signal correlator
- super-dimensional resonator
- super-fluorescence