| Acronym | Meaning |
| DLTS | Deep-level Transient Spectroscopy |
| CTTS | Classical T Tauri Star |
| ASTRAP | Advanced Statistical Trajectory Regional Air Pollution Model |
| RSPA | Research And Special Programs Administration (Dept. Of Transportation) |
| ARSCFC | Approximate Relativistic SCF (with) Corrections |
| VHMS | Volcanic-hosted Massive Sulfide |
| IRGCHAZ | Intercritically Reheated Grain-coarsened Heat-affected Zone |
| VTA | Ventral Tegmental Area |
| NELAP | National Environmental Laboratory Accreditation Program |
| OSTLS | Optical Saturation Thermal Lens Spectrometry |