| Abbreviation | Definition |
|---|---|
| SEAM | Shared Electric and Automated Mobility |
| SEAP | Sony Electronics Asia Pacific |
| SEB | Seat Electronics Box |
| SEB | Swapping Electric Block |
| SEBI | Securities Electronic Board of India |
| SEBI | Sheet Electron Beam Irradiation |
| SEBS | Sulit Electronics Buy and Sell |
| SEC | Samsung Electronics Corporation |
| SEC | Service Entrance Cable |
| SEC | Single Edge Contact |
| SECAM | Séquentiel Couleur Avec Mémoire |
| SECAM | System electronic Color and Memory |
| SECAM | System Essentially Contrary to American Method |
| SECE | Synchronized Electric Charge Extrac |
| SECF | Submarine Electronics Computer Field |
| SECF | Submarine Electronics/Computer Field |
| SECS | Semiconductor Equipment Communications Standard |
| SED | Secure Electronic Delivery |
| SED | Site Equipment Demonstration |
| SED | Smoke Emitting Diode |