Lower Torso Assembly 
lighter-than-air 
Lighter Than Air 
Low Temperature Aftercooling 
Long Term Agreement 
Lead Trial Attorney 
LEM Test Article 
Line Turn-Around 
Linear Triaxial Accelerometer 
Local Tourism Association 
Local Training Area 
Lost Time Accident 
Lab Testing Agreements 
large T antigen 
laser thermal ablation 
Laser thermal angioplasty 
laser thermal anneal 
Laser trabecular ablation 
latent transition analysis 
Launch to Activation 
Launch to Activiation 
Launch Tube Assembly 
Lawn Tennis Association 
Lead Technical Activity 
lead test assembly 
lead tetraacetate 
leisure time physical activity 
less than adequate 
Library Technology Assistant 
life-threatening asthma