| Acronym | Meaning |
| ANS | Advanced Neutron Source |
| PPB | Parts Per Billion |
| UPA | Unitary-pole Approximation |
| STF | Slater-type Function |
| CRAF | Comet Rendezvous Asteroid Flyby |
| MGMT | O6-methylguanine-DNA Methyltransferase |
| SARA | Superfund Amendments And Reauthorization Act Of 1986 |
| PWRI | Public Works Research Institute (Japan) |
| PROM | Programmable Read-only Memory |
| FCA | Fuzzy Cluster Analysis |