Spin-Polarized Photoemission 
sporadic periodic paralysis 
Staff Personnel Policies 
Stand Pipe Pressure 
Standard Play Plus 
Standard Practices and Procedures 
Standard Printer Port 
Starter Pack Programme 
State Partnership Program 
Statewide Pricing Pilot 
Station Programmable PIN 
Statutory Paternity Pay 
still picture projector 
Streptococcal proteinase precursor 
stromal processing peptidase 
Student Potential Programme 
Student Purchase Program 
sucrose-phosphate phosphatase 
SUN-POINTING PLATFORM 
superprecipitation 
Supporting People Programme 
suprapatellar pouch 
Supreme People's Procuratorate 
surface plasmon polaritons 
Surplus Pupil Places 
suspended particulate phase 
Sustained progress program 
sweet potato peroxidase 
system package program 
System Platform Processor