| Acronym | Meaning |
| BWCCD | Brillouin-Wigner Coupled-cluster (with) Double (excitation) |
| RAPRA | Rubber And Plastics Research Association |
| UNO-CAS | Unrestricted Natural Orbital-complete Active Space |
| HAUP | High Accuracy Universal Polarimeter |
| ARAMS | Advanced Regional Atmospheric Modeling System |
| SPRKKR | Spin-polarized Relativistic Korringa-Kohn-Rostoker |
| ICC | Integrated Cell Culture |
| ODPA | 4,4'-oxydiphthalic Anhydride |
| ALPS | Autoimmune Lymphoproliferative Syndrome |
| SEAM | Superfund Exposure Assessment Manual |