| Acronym | Meaning |
| ISAAC | International Study Of Asthma And Allergies In Childhood |
| AIP | Acute Intermittent Porphyria |
| R-CNDO/1X | Relativistic Complete Neglect Of Differential Overlap (method) |
| BGE | Background Electrolyte |
| AEA | Acoustic Emission Analysis |
| ECRA | Economic Cleanup Responsibility Act |
| CELDS | Computer Aided Environmental Legislative Data System |
| ADA | N-(2-acetamido) Iminodiacetic Acid |
| PPKTP | Periodically Poled KTiOPO4 |
| NWIS | Nuclear Weapons Identification System |