| 
LLL | 
| 
L&EO
 | 
Launch and
 Early Orbit | 
| 
LaRC
 | 
Langley Research
 Center | 
| 
LASCO
 | 
Large
 Angle and Spectrometric Coronagraph
 | 
| 
LCC
 | 
Life Cycle
 Cost | 
| 
LED
 | 
Light
 Emitting Diode
 | 
| 
LEO
 | 
Low Earth Orbit
 | 
| 
LET
 | 
Latch-up Event Threshold
 | 
| 
LET
 | 
Low Energy Telescope
 | 
| 
LEO-T
 | 
Low Earth Orbit - Tracking Station
 | 
| 
LFR
 | 
Low Frequency Receivers
 | 
| 
LGA
 | 
Low Gain Antenna
 | 
| 
LIM
 | 
Laser
 Intensity Monitor
 | 
| 
LM
 | 
Lockheed Martin
 | 
| 
LMATC
 | 
Lockheed Martin Advanced Technology Center
 | 
| 
LMMS
 | 
Lockheed Martin Missiles and Space
 | 
| 
LMSAL
 | 
Lockheed Martin Solar and Astrophysics Laboratory
 | 
| 
LOA
 | 
Letter
 of Agreement
 | 
| 
LOS
 | 
Loss of Signal
 | 
| 
LRR
 | 
Launch Readiness
 Review | 
| 
LT
 | 
Limited
 Test
 | 
| 
LV
 | 
Launch Vehicle | 
| 
LVC
 | 
Low Voltage Converter
 | 
| 
LVDS
 | 
Low Voltage Differential Signal
 | 
| 
LVPC
 | 
Low Voltage
 Power Converter | 
| 
LVS
 | 
Low Voltage Supply
 | 
| 
LVSMS
 | 
Low Voltage Sensing Mission Simulation
 | 
| 
LWS
 | 
Langmuir Wave Statistics
 | 
| 
LWS
 | 
Living With a Star
 | 
 
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