| Acronym | Meaning |
| TDKS | Time-dependent Kohn-Sham (d.-functional Operator Equation) |
| ETSAP | Energy Technology Systems Analysis Program |
| GDIM | Generalized Diatomics-in-molecules (theory) |
| ESEM | Environmental Scanning Electron Microscopy |
| RDPP | Reverse Differential-pulse Polarography |
| NRMRL | National Risk Management Research Laboratory |
| FOBT | Fecal Occult Blood Test |
| UDRI | University Of Dayton Research Institute |
| CCC | Copyright Clearance Center |
| PCILO | Perturbative Configuration Interaction Using Localized Orbitals |