| Acronym | Meaning |
| IAP | Imaging Atom Probe |
| TEF | Toxicity Equivalency Factor |
| FHMO | Fenske-Hall MO |
| JSGA | Japanese Spaceguard Association |
| PT2F | Second-order Perturbation Theory (with) Fock (matrix) |
| NOES | National Occupational Exposures Survey |
| SRA | Sudden Rotation Approximation |
| SBR | Sequential Batch Reactor |
| BHRA | British Hydromechanics Research Association |
| HGMIS | Human Genome Management Information System |