| Abbreviation | Definition |
|---|---|
| CINEMA | Commerce Internet and Electronic Mail Access |
| CIP | Cascade Improvement Program |
| CIP | Component in Paste |
| CIP | Continuous Improvement Program |
| CIQE | Cryogenic Instrumentation for Quantum Electronics |
| CIS | Copper Indium diSelenide |
| CISC | Complex Instruction Set Computer |
| CIVA | Charge-Induced Voltage Alteration |
| CIWE | China International Water and Electric |
| CL | CathodoLuminescence |
| CL | Component Library |
| CL | Current Loop |
| CLA | Central Line Average |
| CLC | Cancel Lot Cycle |
| CLCC | Ceramic Leaded Chip Carrier |
| CLD | Current Limiting Device |
| CLD | Filter Capacitor for the Level Detector Comparator |
| CLDD | Chip-Level Differential Detection |
| CLGA | Ceramic Land Grid Array |
| CLI | Cumulative Leakage Index |