| Acronym | Meaning |
| RTT | Resonant Tunneling Transistor |
| TIW | Time-independent Wave Packet |
| SRFA | Suwanee River Fulvic Acid |
| ELMO | Energy-localized Molecular Orbital |
| SCEP | Self-consistent Electron-pair Theory |
| IPOD | International Phase Of Ocean Drilling |
| UPF | UV Protection Factor |
| WPCF | Water Pollution Control Federation |
| IAVI | International AIDS Vaccine Initiative |
| AECB | Acute Exacerbations Of Chronic Bronchitis |