| Acronym | Definition |
|---|
| LSSL➣Landing Ship Support, Large |
| LSSL➣Lateral Surface Superlattice (physics) |
| LSSL➣Legal Software Solutions Limited (Perthshire, Scotland, UK) |
| LSSL➣Large Scale System Laboratory |
| LSSL➣Life Support Systems Laboratory (QinetiQ Group PLC; UK) |
| LSSL➣Lung Surfactant Surface Layer |