EfW
| Acronym | Definition |
|---|---|
| EfW | Energy From Waste |
| EfW | Electric Front Windows |
| EfW | Embedded Firewall |
| EfW | Economic Freedom of the World |
| EfW | Estimated Fetal Weight |
| EfW | Electric Fusion Welded (pipe) |
| EfW | Electric Field and Wave Experiment (Cluster spacecraft) |
| EfW | Emergency Feedwater |
| EfW | Entomology, Fisheries and Wildlife (Minnesota) |
| EfW | Elbit-Fort Worth (Elbit Systems Ltd) |
| EfW | Evanescent Floquet Wave |
| EfW | Exercise First Wave (NATO simulation exercise) |
| EfW | Exponential Forgetting Window (signal processing) |