| Acronym | Meaning |
| PTCR | Positive Temperature Coefficient Of Resistance (of Semiconductors) |
| HSEOS | Hard-sphere Equation Of State |
| BIIR | Brominated Isobutene-isoprene Rubber |
| BOPP | Biaxially Oriented Poly(propylene) |
| CAEDYM | Computational Aquatic Ecosystems Dynamic Model |
| BO | Biorthonormal (wave Function) |
| LHEA | Laboratory For High Energy Astrophysics |
| UTP | Unitary Transformation (based) Perturbation (theory) |
| SS-CCSD | State Selective-CCSD |
| HTL | Hole Transport Layer |