| Acronym | Meaning |
| SASU | Source Apportionment |
| HIERDA | Heavy Ion Elastic Recoil Detection Analysis |
| BAW | Bond-order Alternation Wave (mol. Orbital) |
| POEMS | Plasma Optical Emission Mass Spectrometer |
| HSCR | Hirschsprung Disease |
| IPA | Inverted Perturbation Approach (in Mol. Potential-energy Curves Calcn.) |
| APRIL | A Proliferation-inducing Ligand |
| HKED | Hybrid K-edge Densitometry |
| HASL | Hypothetical Active Site Lattice |
| CGHE | Carrier Gas Hot Extraction |