Systems Engineering Division 
Shipper's Export Declaration 
Software Engineering Directorate 
stream editor 
Sensor Evolutionary Development 
Smoke Emitting Diode 
Software Engineering Division 
spectral energy distribution 
State Education Department 
Said Enough Darling 
Science and Exploration Directorate 
Scottish Education Department 
sedimentation 
serious emotional disturbance 
Shippers Export Declaration 
signals external data 
Simulative Electronic Deception 
Single Entitlement Document 
skin erythema dose 
Special Electrical Devices 
Special Engineer Detachment 
Spherical equivalent diameter 
Survey of Earned Doctorates 
System Engineering Division 
Safety And Environmental Division 
Safety Evaluation Document 
Said 
Sanitary Engineering Division 
Saturn Electrostatic Discharges 
Science and Engineering Directorate