| Acronym | Meaning |
| CCEA | Conventional Combustion Environmental Assessment |
| AIRS | Atmospheric Infrared Sounder |
| ABTS | 2,2'-azinobis(3-ethyl-benzthiazoline-6-sulfonic Acid) |
| VBM | Valence-band Model (in Electronic Structure Calcns.) |
| ITTFA | Iterative Target Transformation Factor Analysis |
| MAB | Molecular Aharonov-Bohm (electronic-structure Effect) |
| ORAU | Oxford Radiocarbon Accelerator Unit (University Of Oxford) |
| NEWWA | New England Water Works Association |
| OPGF | One-particle Green Function |
| CTIOSA | Charge-transfer Infinite Order Sudden Approxn. |