| Abbreviation | Definition |
|---|---|
| LDO | Luminescent Dissolved Oxygen |
| LDPE | Low Density Poly-Ethylene |
| LDR | Let Down Ratio |
| LEAR | Low Erucic Acid Rapeseed |
| LEO | Loose Electron Oxidation |
| LEO | Loose Electrons Oxidized |
| LEOGER | Losing Electron Oxidation Gaining Electron Reduction |
| LEP | Large Electron Positron |
| LEPH | Light Extractable Petroleum Hydrocarbons |
| LES | Local Excitatory State |
| LESF | Lecithin Ethanol Soluble Fraction |
| LF | Low Fluorocarbon |
| LFCB | Laboratory of Food Chemistry and Biochemistry |
| LFE | Low Formaldehyde Emission |
| LFL | Lower Flammable Limit |
| LFNA | Lateral flow nucleic acid |
| LFP | Lithium Ferro-Phosphate |
| LGB | Lotte Gas Boiler |
| LH | Lighter Hydrocarbons |
| LH | Low Heat |