| Acronym | Meaning |
| NIGA | Neutron Induced Gamma Activity |
| EBR | Experimental Breeder Reactor |
| TFA | Total Fatty Acids |
| NEWS | National Surface Water Survey (USEPA) |
| NEJAC | National Environmental Justice Advisory Council |
| CPBA | Coulomb-projected Born Approximation |
| UCMP | Unrestricted Compact Model Potential |
| RILS | Regulatory Interpretation Letters |
| CRAF | Comet Rendezvous Asteroid Flyby |
| ECP | Effective Core Potential Approxn.(in Electronic-structure Calcn.) |