| L-CPMET | Linearized Coupled-pair Many-electron Theory | - | Computer Acronyms(common) |
| L2 | Square Integrable (wave Function) (in Electron-atom Or -mol. Collisions) | - | Computer Acronyms(common) |
| L2MS | Laser-desorption Laser-ionization Mass Spectrometry | - | Computer Acronyms(common) |
| L2MS | 2-step Laser Mass Spectrometry | - | Computer Acronyms(common) |
| LAAFS | Laser Ablation Atomic Fluorescence Spectroscopy | - | Computer Acronyms(common) |
| LAAM | Levo-alpha Acetyl Methadol | - | Computer Acronyms(common) |
| LAAS | Laser Atomic Absorption Spectrometry | - | Computer Acronyms(common) |
| LAB | Linear Alkylbenzene | - | Computer Acronyms(common) |
| LAC | Liquid Adsorption Chromatography | - | Computer Acronyms(common) |
| LACBED | Large-angle Convergent-beam Electron Diffraction | - | Computer Acronyms(common) |
| LACCC | Liquid Absorption Chromatography At Critical Conditions | - | Computer Acronyms(common) |
| LACE | Laser-assisted Chemical Etching | - | Computer Acronyms(common) |
| LACE | Lectin Affinity Capillary Electrophoresis | - | Computer Acronyms(common) |
| LACO | Linearized Atomic Cell Orbital (in Energy-band Calcn.) | - | Computer Acronyms(common) |
| LAD | Left Anterior Descending | - | Computer Acronyms(common) |
| LAD | Leukocyte Adhesion Deficiency | - | Computer Acronyms(common) |
| LADD | Lifetime Average Daily Dose | - | Computer Acronyms(common) |
| LADD | Lowest Acceptable Daily Dose | - | Computer Acronyms(common) |
| LADH | Liver Alcohol Dehydrogenase | - | Computer Acronyms(common) |
| LAEC | Lowest Achievable Emission Rate | - | Computer Acronyms(common) |
| LAER | Lowest Achievable Emission Rate | - | Computer Acronyms(common) |
| LAESA | Laser Ablation Emission Spectrochemical Analysis | - | Computer Acronyms(common) |
| LAGST | Leaking Above Ground Storage Tank | - | Computer Acronyms(common) |
| LAH | Lithium Aluminum Hydride | - | Computer Acronyms(common) |
| LAI | Leukocyte Adherence Inhibition | - | Computer Acronyms(common) |
| LAI | Leaf Area Index | - | Computer Acronyms(common) |
| LAICP | Laser Ablation Inductively Coupled Plasma | - | Computer Acronyms(common) |
| LAIS | Liquid Alloy Ion Source | - | Computer Acronyms(common) |
| LAIV | Live Attenuated Influenza Virus | - | Computer Acronyms(common) |
| LAK | Lymphokine Activated Killer | - | Computer Acronyms(common) |
| LAKE | Clean Lakes Database (accessible Through OLS) | - | Computer Acronyms(common) |
| LAL | Limulus Amebocyte Lysate (endotoxin Test) | - | Computer Acronyms(common) |
| LALA | Large Area Lyman Alpha | - | Computer Acronyms(common) |
| LALIF | Laser Atomization/Laser Induced Fluorescence | - | Computer Acronyms(common) |
| LALLS | Low Angle Laser Light Scattering | - | Computer Acronyms(common) |
| LAMBD | Laser Assisted Molecular Beam Deposition | - | Computer Acronyms(common) |
| LAMES | Laser Micro Emission Spectroscopy | - | Computer Acronyms(common) |
| LAMMA | Laser Microprobe Mass Analysis | - | Computer Acronyms(common) |
| LAMMS | Laser Micro Mass Spectrometry | - | Computer Acronyms(common) |
| LAMOFS-ETE | Laser Excited Molecular Fluorescence Spectroscopy With Electrothermal Evaporation | - | Computer Acronyms(common) |
| LAMP | Lake Acidification Mitigation Project | - | Computer Acronyms(common) |
| LAMP | Lysosome-Associated Membrane Protein | - | Computer Acronyms(common) |
| LAMP | Laser Ablation Microprobe | - | Computer Acronyms(common) |
| LAMPRE | Los Alamos Molten Plutonium Reactor Experiment | - | Computer Acronyms(common) |
| LAMS | Laser Mass Spectrometry | - | Computer Acronyms(common) |
| LAN | Local-area Network | - | Computer Acronyms(common) |
| LANL | Los Alamos National Laboratory | - | Computer Acronyms(common) |
| LAO | London Atomic Orbital | - | Computer Acronyms(common) |
| LAOCOON | Least-squares Adjustment Of Calculated On Observed NMR Spectra | - | Computer Acronyms(common) |
| LAOES | Laser Ablation Optical Emission Spectroscopy | - | Computer Acronyms(common) |
| LAOM | Localized At. Orbital Method (in Electronic Structure Calcn.) | - | Computer Acronyms(common) |
| LAOS | Large Amplitude Oscillatory Shear | - | Computer Acronyms(common) |
| LAOS | Light Amplifying Optical Switch | - | Computer Acronyms(common) |
| LAP | Laboratory Accreditation Program | - | Computer Acronyms(common) |
| LAP | Laboratory Analytical Protocol | - | Computer Acronyms(common) |
| LAP | Latency-associated Peptide | - | Computer Acronyms(common) |
| LAPIS | Linden Atmosphere/Phytosphere Interaction Study | - | Computer Acronyms(common) |
| LAPS | Light-Addressable Potentiometric Sensor | - | Computer Acronyms(common) |
| LAPW | Linearized Augmented Plane Wave (for Band-structure Calcns.) | - | Computer Acronyms(common) |
| LAQL | Lowest Analytically Quantifiable Level | - | Computer Acronyms(common) |
| LARIS | Laser Ablation And Resonance Ionization Spectroscopy | - | Computer Acronyms(common) |
| LART | Laser Absorption Radiation Thermometry | - | Computer Acronyms(common) |
| LARVA | Light-absorption Ratio Variation Approach | - | Computer Acronyms(common) |
| LAS | Laser Absorption Spectroscopy | - | Computer Acronyms(common) |
| LAS | Linear Alkylbenzene Sulfonates (anionic Surfactants) | - | Computer Acronyms(common) |
| LASA | Lidar Atmospheric Sounder And Altimeter | - | Computer Acronyms(common) |
| LASCO | Large Angle Spectroscopic Coronograph | - | Computer Acronyms(common) |
| LASCR | Light-activated Silicon Controlled Rectifier | - | Computer Acronyms(common) |
| LASCS | Light-activated Silicon Controlled Switch | - | Computer Acronyms(common) |
| LASE | Lidar Atmospheric Sensing Experiment | - | Computer Acronyms(common) |
| LASER | Light Amplification By Stimulated Emission Of Radiation | - | Computer Acronyms(common) |
| LASIK | Laser-assisted In Situ Keratomileusis | - | Computer Acronyms(common) |
| LASP | Laboratory For Atmospheric And Space Physics | - | Computer Acronyms(common) |
| LASS | Laser-assisted Spark Spectroscopy | - | Computer Acronyms(common) |
| LAST | Lowest Anticipated Service Temperature | - | Computer Acronyms(common) |
| LASTO | Linear Augmented Slater-type Orbital (for Electronic Structure) | - | Computer Acronyms(common) |
| LAT | Latency-associated Transcript | - | Computer Acronyms(common) |
| LAT | Linker For Activation Of T Cells | - | Computer Acronyms(common) |
| LATS | Long-Acting Thyroid Stimulator | - | Computer Acronyms(common) |
| LAW | Low-activity Waste | - | Computer Acronyms(common) |
| LAWG | Laboratory Accreditation Working Group | - | Computer Acronyms(common) |
| LAWS | Laser Atmospheric Wind Sounder (NASA) | - | Computer Acronyms(common) |
| LAXRD | Low-angle X-ray Diffraction | - | Computer Acronyms(common) |
| LAXS | Large-angle X-ray Scattering | - | Computer Acronyms(common) |
| LBD | Ligand Binding Domain | - | Computer Acronyms(common) |
| LBE | Lance Bubbling Equil. | - | Computer Acronyms(common) |
| LBF | Local Basis Function Method (for Solid State Band Structure) | - | Computer Acronyms(common) |
| LBIC | Light Beam Induced Current | - | Computer Acronyms(common) |
| LBM | Laser Beam Machining | - | Computer Acronyms(common) |
| LBO | Localized Born-Oppenheimer | - | Computer Acronyms(common) |
| LBP | Lipopolysaccharide-binding Protein | - | Computer Acronyms(common) |
| LBSF | Local Back Surface Field (solar Cells) | - | Computer Acronyms(common) |
| LBW | Laser-beam Welding | - | Computer Acronyms(common) |
| LBZ | Local Brittle Zone | - | Computer Acronyms(common) |
| LC | Lethal Concentration | - | Computer Acronyms(common) |
| LC | Liquid Chromatography | - | Computer Acronyms(common) |
| LC-ESI-MS/MS | Liq. Chromatog.-electrospray Ionization-tandem Mass Spectrometry | - | Computer Acronyms(common) |
| LCA | Life Cycle Assessment | - | Computer Acronyms(common) |
| LCAO | Linear Combination Of Atomic Orbitals | - | Computer Acronyms(common) |
| LCAO CO | Linear Combination Of Atomic Orbitals Crystal Orbital | - | Computer Acronyms(common) |
