| Abbreviation | Definition |
|---|---|
| LSI | Low-Speed Internal Clock |
| LSIC | Large Scale Integrated Circuit |
| LSM | Laser Scanning Microscope |
| LSM | Linux Security Module |
| LT | Lower Threshold |
| LTB | Local Terminal Block |
| LTC | Lithographic Test Chip |
| LTCC | Low Temperature Co-fired Ceramic |
| LTCC | Low Temperature Co-fired Ceramics |
| LTCVD | Low-Temperature Chemical Vapor Deposition |
| LTL | Lot-To-Lot |
| LTN | Location Table Number |
| LTO | Lithium Titanium Oxide |
| LTO | Low Temperature Oxide |
| LTPD | Lot Tolerance Percent Defective |
| LTPS | Low Temperature Poly-Silicon |
| LTRT | Left Total Right Total |
| LTS | Low Temperature Superconductor |
| LTT | Light Triggered Thyristor |
| LTU | Line Termination Unit |