| Acronym | Meaning |
| EXPRES | Expert System For Pesticide Regulatory Evaluations And Simulations |
| ATS | Applied Technology Satellite |
| PTCA | Percutaneous Transluminal Coronary Angioplasty |
| NDPD | National Data Processing Division |
| CSRS | Cooperative State Research Service (US Dept. Of Agriculture) |
| EPTOX | Extraction Procedure Toxicity Test |
| NFKB | Nuclear Factor Kappa B |
| TSH | Tensor Surface Harmonic (method In Bonding Of Metal Clusters) |
| CTF | Contrast-transfer Function |
| PDF | Probability-distribution Function |