Singapore Dollar 
Solar Geophysical Data 
Symbolized Graphic Data 
IATA code for Sønderborg Airport, Sønd… 
Saccharomyces Genome Database 
salivary gland dysfunction 
Seafloor Geosciences Division 
secondary granule deficiency 
Self-Generating Dictionary 
Signed 
Skeletal Gene Database 
Sky Gate International Aviation 
sliding glass door 
Society of Glass Decorators 
Special Government Design 
specific granule deficiency 
specific growth delay 
steam generator dryout 
Stored Gas Device 
Straight Gelatin Dynamite 
Student Game Developers 
submarine groundwater discharge 
Surveyor Generals Department 
Surveyor General's Department 
Symbolized Graphics Data