| Abbreviation | Definition |
|---|---|
| SED | Solar Electric Development |
| SED | Structured Electronic Data |
| SEDAR | System for Electronic Document Analysis and Retrieval |
| SEDD | Staged Electronic Data Deliverable |
| SEDI | Sumitomo Electric Device Innovation |
| SEDI | System for Electronic Disclosure by Insiders |
| SEDOR | Spin Echo DOuble Resonance |
| SEEC | Shihlin Electric and Engineering Corporation |
| SEEE | School of Electrical & Electronic Engineering |
| SEEL | Samaya Electronics Egypt Ltd. |
| SEEPZ | Santacruz Electronic Export Processing Zone |
| SEEPZ | Santacruz Electronics Exports Processing Zone |
| SEF | Sharp Electronics France |
| SEF | Smoke Extractor Fan |
| SEG | Selective Epitaxial Growth |
| SEG | Shenzhen Electronics Group |
| SEGS | Solar Electric Generating System |
| SEGS | Solar Electric Generating Systems |
| SEI | Stackpole Electronics Inc |
| SEI | Sumitomo Electric Industries |