| Acronym | Meaning |
| APT | Atomic Polar Tensor (in Ir Spectra Calcn.) |
| UCC | Unitary Coupled-cluster |
| MON | Motor (method) Octane No. |
| ASA | Acrylonitrile-styrene-acrylate Terpolymer |
| ADMI | American Dye Manufacturers Institute |
| SPR | Stroboscopic Pulse Radiolysis |
| FFM | Friction Force Microscopy |
| BST | Barium Strontium Titanate |
| DHMS | Dense Hydrous Magnesium Silicates |
| CSEPP | Chemical Stockpile Emergency Preparedness Plan |