| Acronym | Meaning |
| UNECE | United Nations Economic Commission For Europe |
| LDOS | Local Density Of States |
| TCC | Thermal Contact Cracking |
| NSCR | Nonselective Catalytic Reduction |
| BHF | Broken-symmetry Hartree-Fock |
| NASP | National Aerospace Plane |
| VFF | Valence Force Field (in Electronic-structure Calcns.) |
| BHT | Brinell Hardness Test |
| NABSA | Nucleic Acid Based Sequence Amplification |
| ICVT | Improved Canonical Variational Theory |