second level domain specific learning disabilities specific learning disability Styled Layer Descriptor super-luminescent diode Severe Learning Difficulties Simulated Launch Demonstration Source Language Debug Special Litigation Division Subscriber Line Data Scattering Length Density Secure Level Debugger Simultaneous Launch Demonstration SLAC Large Detector State Legislative District Stiff-Leg Derrick Subscriber Line Device system link designator Satellite Launch Dispenser Scalaradial scapholunate dissociation Schools and Libraries Division Scientific Lab Division Scientific Liaison Division scleroderma lung disease Sealed Second Level Domains Second Line of Defense Second-Level Domain Secretarial Language Diploma
second level domain