| Acronym | Meaning |
| HMM | Hidden Markov Model |
| QRIOSA | Quantum Reactive Infinite Order Sudden Approxn. |
| EQCIS | Electrochemical Quartz Crystal Impedance System |
| AQCR | Air Quality Control Region (US EPA) |
| DBE | Deep Basin Experiment |
| DHHS | Department Of Health And Human Services |
| CLIP | Corticotropin-Like Intermediate-lobe Peptide |
| OTLC | Open Tubular Liquid Chromatography |
| SR-CCD | Single Reference-CCD |
| NTTC | National Technical Transfer Center |