| Acronym | Meaning |
| IAD | Ion Assisted Deposition |
| CDDIS | Crustal Dynamics Data Information System |
| RS-HFPT | Rayleigh-Schroedinger Hartree-Fock Perturbation Theory |
| ARS | Agricultural Research Service (US Dept. Of Agriculture) |
| ATD | Alzheimer Type Dementia |
| CCW | Charge Current Wave (type Of Hartree-Fock Wave Function) |
| BAER | Brainstem Auditory Evoked Response |
| LOPAC | Library Of Pharmacologically Active Compounds |
| CAS-SI | Complete Active Space-state Interaction |
| EXPRES | Expert System For Pesticide Regulatory Evaluations And Simulations |