| Acronym | Meaning |
| TRCF | Transcription-repair Coupling Factor |
| VBR | Variational Basis Representation (in Quantum Calcns.) |
| TH | Total Hardness [of Water] |
| HIT | Heterojunction With Intrinsic Thin Layer (photovoltaic Cell; Solar Cell) |
| SCNT | Somatic Cell Nuclear Transfer |
| DO | Diatomic Orbital |
| PDS | Photothermal Deflection Spectroscopy |
| BIND | Biomolecular Interaction Network Database |
| LSI | Large-scale Integration |
| CMBR | Cosmic Microwave Background Radiation |