Delivery Sequence File
Dispersion Shifted Fiber
Dear Special Friend
device simulation framework
Display Simulation Facility
Data Secured File
Data Services Facility
Day-Second Feet
dead space free
Defense Services Facility
Defense Stock Fund
Defense Supply Fund
Defined Strategy Fund, Inc.
Deployable Special Handling and Evalua…
Deployed Special Handling and Evaluati…
desferrioxamine
Device Simulator Framework
Device Special Function
diabetic serum factor
diffusible signal factor
digital subtraction fluorography
Directional Solidification Furnace
Directory System Function
Disappearance of a Solar Filament
disease-free survival
Disk Storage Facility
Dispersion Shifted Fibre
Dispersion-Shifted Fiber
Dispersion-Strengthened Ferritic
Display System Function