| Abbreviation | Definition |
|---|---|
| LCMT | Load Compression Mechanical Test |
| LCPE | Laboratory of Chemical Physics and Engineering |
| LCR | Longitudinal Critically Reflected |
| LCS | Lagrangian Coherent Structure |
| LCT | Lattice Compatibility Theory |
| LCTE | Linear Coefficient of Thermal Expansion |
| LDA | Laser Doppler Anemometry |
| LDDV | Least Distance of Distinct Vision |
| LDMS | Laser Desorption Mass Spectrometry |
| LDP | Low Density Plasma |
| LDPO | Linearly Driven Parametric Oscillator |
| LDSE | Laser Doped Selective Emitter |
| LE | Light Entry |
| LE | Local Entropy |
| LE | Low Energy |
| LEACH | Low Energy Adaptive Clustering Hierarchy |
| LEBIT | Low Energy Beam and Ion Trap |
| LEC | Law of Energy Conservation |
| LENA | Laboratory For Experimental Nuclear Astrophysics (Duke University) |
| LENI | Lighting Energy Numeric Indicator |