Land Processes 
Low Pressure 
lumbar puncture 
Long Play 
Long Playing 
Listening Post 
Log Periodic 
Launch Package 
line printer 
luteal phase 
Launch Pad 
Linear Polarization 
Linear Programming 
Linearly Polarized 
liquid propellant 
logical partition 
Low Pass 
Low Power 
Lunar Prospector 
Laboratory Port 
Labour Party 
lamina propria 
Lan Peru 
LANGMUIR PROBE 
latency period 
Launch Point 
Leased Platform 
Legislative Proposal 
Lesson Plan 
Liberal Party