Link Resource Manager 
Low Rate Multiplexer 
Limited Register Machine 
Language Reference Manual 
Line Replaceable Module 
Line Route Map 
Line-Reflect-Match 
Lunar Reconnaissance Module 
IATA code for La Romana International… 
laboratory reference material 
Lance-Roquettes Multiple 
Laser Raman Microscopy 
Layout Risk Model 
Leaflet Rolling Machine 
Leak rate monitor 
Least Recently used Master 
Least Recently-Used Master 
Left-to-Right Mark 
Line Replacement Module 
Linear Referencing Method 
Linear Reluctance Motor 
Liquid Reaction Molding 
Liquid Rocket Motor 
List of Required Modifications 
Local Resource Management 
Local Risk Management 
logistic regression model 
Logistics Requirements Matrix 
Long Reach Multimode 
Long-Range Missile