| Acronym | Meaning |
| ACCDPPA | Approx. Coupled Cluster With Double Excitations Polarization Propagator Approxn. |
| RTPCR | Reverse Transcriptase Polymerase Chain Reaction |
| PFEO | Perimeter Free Electron Orbital |
| ANGIS | Australian National Genomic Information Servicepar |
| JPO | Japanese Patent Office |
| LOAEL | Lowest Observed Adverse Effect Level |
| SDQ-MBPT | Single (and) Double (and) Quadruple (substituted States) Many-body Perturbation Theory |
| HDTMAB | Hexadexyltrimethylammonium Bromide |
| IGC | International Geological Congress |
| BLC | Borderless Contact |