| Acronym | Meaning |
| WERL | Water Engineering Research Laboratory |
| MS X(ALPHA) | Multiple-scattering X(alpha) Exchange Method |
| HCS | Hazard Communication Standard |
| RFE | Relaxor Ferroelectrics |
| DOIT | Federal Advisory Committee To Develop On-site Innovative Technologies |
| CIC | Configuration Interaction (in The) Continuum (theory In Calcns. Of Atomic Resonances) |
| RFA | Regulatory Flexibility Act |
| RQCISD | (spin) Restricted QCISD |
| ERD | Emergency Response Division |
| ROSS | River Oil Spill Simulation |