| Acronym | Meaning |
| RDA | Regularized Discriminant Analysis |
| LHSF | Local Hyperspherical Surface Functions (in Quantum Calcns. On Reactive Scattering) |
| TVS | Total Volatile Solids |
| EIL | Environmental Impairment Liability |
| WLA | Waste Load Allocation |
| HMTUSA | Hazardous Materials Transportation Uniform Safety Act |
| SOFAR | Sound Fixing And Ranging |
| SAC-CI | Symmetry-adapted Cluster Configuration Interaction (theory For Wave-function Expansion) |
| ICPEMC | International Commission On Protection Against Environmental Mutagens And Carcinogens |
| TILIBS | Time-integrated Laser Induced Breakdown Spectroscopy |