| Abbreviation | Definition |
|---|---|
| LC | Loop Count |
| LC | Lethal Concentration |
| LC | Locus Coeruleus |
| LCA | Light Combat Aircraft |
| LCA | Launch Control Amplifier |
| LCA | Liver Cell Adenoma |
| LCAF | Local Commemorative Activities Fund |
| LCAM | Liver Cell Adhesion Molecule |
| LCB | Least Common Bit |
| LCBF | Local Cerebral Blood Flow |
| LCBI | Laboratory-confirmed Bloodstream Infection |
| LCC | Launch Commit Criteria |
| LCC | Launch Control Center |
| LCC | Liver Cell Carcinoma |
| LCC | Leaded Chip Carrier |
| LCCC | Leaded Ceramic Chip Carrier |
| LCCD | Launch Commit Criteria Document |
| LCD | Liquid Crystal Display |
| LCE | Loop Counter Expired |
| LCFA | Long- Chain Fatty Acid |
| LCFA | Lone Cryptogenic Fibrosing Alveolitis |
| LCG | Liquid Cooled Garment |
| LCH | Langerhans cell histiocytosis |
| LCHTF | Low Cycle High Temperature Fatigue |
| LCIF | Laser-Collision-Induced Fluorescence |
| LCIS | Lobular Carcinoma In Situ - type of breast cancer |
| LCKMS | Lakh Conductor Kilometres |
| LCL | Local Current Limiter |
| LCM | Lowest Common Multiple |
| LCM | Local Command Mode |
| LCM | Left Costal Margin |
| LCM | Least Common Multiple |
| LCMP | Life Cycle Management Plan |
| LCMS | Low Cost Modular Spacecraft |
| LCO | Launch Control Officer |
| LCOM | Logic Control Output Module |
| LCP | Load Current Procedure |
| LCP | Link Control Protocol |
| LCP | Large Combustion Plant |
| LCP | Linux Certified Professional |
| LCP | Liquid Crystal Powder |
| LCPD | Legg Calve Perthes Disease |
| LCPD | Large Combustion Plant Directive |
| LCRA | Light Canard Research Aircraft |
| LCRF | Luminal CCK- Releasing Factor |
| LCS | Low Contact Stress |
| LCS | Laboratory Control Sample |
| LCS | Launch Control System |
| LCS | List of Command Signals |
| LCS | Laser Communications Subsystem |