| Acronym | Meaning |
| PITT | Partitioning Interwell Tracer Test |
| CAD | Coronary Artery Disease |
| ANS | Autonomic Nervous System |
| MOPITT | Measurements Of Pollution In The Troposphere |
| DASHO | Designated Agency Safety And Health Official |
| TIAS | Technology Investment Assessment Screen |
| HAB | High-Alumina Basalt |
| ARPEFS | Angle-resolved Photoemission Extended Fine Structure |
| ATD | Atmospheric Technology Division |
| QCISD(T) | Quadratic CI (with) Single (and) Double (excitations) (and) [triple Excitations Added Perturbatively] |