| Abbreviation | Definition |
|---|---|
| LHA | Lipo Hydroxy Acid |
| LHC | Large Hadron Collider |
| LHH | Light, Heat, and Humidity |
| Li | Lithium |
| LIF | Laser-Induced Fluorescence |
| LiF | Lithium Flouride |
| Li-ION | Lithium-ION |
| LINC | Laboratory Instrumentation Computer |
| LIPO | LIthium POlymer |
| LIQ | Liquid |
| LISA | Localized Ionic Sensory Activator |
| LLD | Liquid Level Detection |
| LLE | Liquid-Liquid Equilibrium |
| LLIT | Liquid-Liquid Intermolecular Transfer |
| LLPT | Liquid-to-Liquid Phase Transition |
| LM | Lithium Manganese |
| LMA | Low Moisture Absorption |
| LME | Liquid Metal Embrittlement |
| LMH | Liquid Metallic Hydrogen |
| LMLA | Low Maintenance Lead Acid |