| Acronym | Meaning |
| AACA | Ambient Atmosphere Conditions And Aging |
| NGC | New General Catalog Of Nebula And Clusters Of Starspar |
| IEAES | Ion Excited Auger Electron Spectroscopy |
| ORS | Odds Ratios |
| BLC | BACT/LAER Clearinghouse |
| ACPQ | Approx. Coupled-pair (theory Cor. For Connected) Quadruply (excited Clusters) |
| HVAC | Heating, Ventilating, Air-conditioning |
| TERRA | Tandem Accelerator For Environmental Research And Radiocarbon Analysis |
| SS-CCSD | State Selective-CCSD |
| SCOPE | Scientific Committee On The Problems Of The Environment |