Low Probability of Intercept 
Linux Professional Institute 
low probability of interception 
Lunar and Planetary Institute 
lines per inch 
Launch Package Integration 
Locality Partner Index 
low pressure injection 
Low Probability Intercept 
Lunar Planetary Institute 
La Paz Intermediate 
Labile plasma iron 
Language Proficiency Index 
Las Palmas Intermediate 
laser peripheral iridotomy 
laser plasma instability 
Learning Preference Inventory 
LEP Pre-Injector 
Lepton-Photon Interaction 
Letteratura professionale italiana 
Lightning Potential Index 
Lightning Protection Institute 
Limited Probability of Intercept 
linear protection index 
Linus Pauling Institute 
Linux Professional Insitute 
liquid photo image 
Local Position Increase 
Logical Path Identifier 
long process of incus