| Acronym | Meaning |
| TOXLIT | Toxicology Literature From Special Sources (NLM) |
| NTR | Nontranslated Region |
| UBA | Unitarized Born Approxn. |
| DOT | Department Of Transportation |
| BCR | Bubble Column Reactor |
| CCLRC | Council For The Central Laboratory Of The Research Councils |
| MSA | Multivariate Statistical Analysis |
| RVD | Regulatory Volume Decrease |
| CSWRCB | California State Water Resources Control Board |
| NLSD | Nonlocal Spin Density (functional Theory) |