| Acronym | Meaning |
| BSO | Brueckner Spin Orbitals |
| ACI | Acceptable Chronic Intake |
| BWCC | Brillouin-Wigner Coupled-cluster (theory) |
| CEACAM1 | Carcinoembryonic Antigen Cell Adhesion Molecule 1 |
| NETI | National Enforcement Training Institute |
| PEMA | Pseudoeffective Mass Approxn. (for Impurity Energy Levels In Semiconductors) |
| TMC | Transition Metal Complex |
| AWQC | Ambient Water Quality Criteria |
| NITM | Normalized Irreducible Tensorial Matrix |
| ZTS | Z Transition State [z = Nuclear Charge] (method For Calcg. Isoelectronic Energy Differences And Electrostatic Potentials For A |