subs - taxi
- suppressed [suppressive] antenna
- suppressed-carrier modulation
- suppressed-carrier operation
- suppressed-carrier signal
- suppressed-carrier tracking
- suppressed-carrier transmitter
- suppressed-clock pulse-duration modulation
- suppressed-zero instrument
- suppressed-zero meter
- suppressed-zero range
- suppressible mutation
- suppressing effect
- suppression
- suppression chamber
- suppression circuit
- suppression filter
- suppression frequency band
- suppression ratio
- suppression [suppressor] pulse
- suppressor
- suppressor grid
- suppressor ionization gage
- suppressor sensitive mutant
- suppressor-sensitive mutation
- suprahilar disk
- supravital [vital] staining
- supremum
- surcharge
- surcharge head
- surcharge load
- surcharge pool
- surcharge pressure
- surcharge storage
- surcharge storage capacity
- surcharge storage elevation
- surd
- sure event
- sure-fire delay
- surf observations
- surf zone