| Acronym | Meaning |
| TSH | (classical) Trajectory Surface Hopping (for Ion-mol. Collisions) |
| SCAP | Self-consistent Average Phonon (theory) |
| CEQA | California Environmental Quality Act |
| MPT | Matrix Perturbation Theory |
| PHC | Photonic Crystal |
| DSVI | Diluted Sludge Volume Index |
| CAPA | Critical Aquifer Protection Area |
| AQDM | Air Quality Display Model |
| ISSI | International Society For Scientometrics And Informetrics |
| GKS | Gaspar-Kohn-Sham (potential For Exchange And Correlation In Band Structure Calcns.) |