| Abbreviation | Definition |
|---|---|
| GC | Gravimetric Calibration |
| GC | Grid Connect |
| GC | Ground Compensation |
| GCB | Generator Circuit Breaker |
| GCC | Generic Cell Controller |
| GCCD | Glass-passivated Ceramic Chip Diode |
| GCCE | Global Conference on Consumer Electronics |
| GCCS | Gray-Controlled Current Source |
| GCD | Gas Chromatography Distillation |
| GCE | General Computers Electronics |
| GCE | General Consumer Electronics |
| GCE | Gold Circuit Electronics |
| GCEA | Greater Cincinnati Electrical Association |
| GCEA | Gunnison County Electric Association |
| GCEC | Grayson Collin Electric Cooperative |
| GCHT | Gate Controlled Hybrid Transistor |
| GCMS | Gas Chromatography Mass Spectroscopy |
| GCT | Gate Control Theory |
| GD | Gate to Drain |
| GD | Glow Discharge |