| Acronym | Meaning |
| ORD | Office Of Research And Development (USEPA) |
| DENT | Double-edge Notched Tension |
| OCAMS | Orbital Correspondence Analysis In Maximum Symmetry |
| SSSD | Small-scale, Short-duration |
| AAO | Amino Acid Oxidase |
| BHMF | Black Hole Mass Functionpar |
| NTB | Nonorthogonal Tight-binding |
| FMIR | Frustrated Multiple Internal Reflection |
| NATA | National Air Toxics Assessment |
| APCI | Atm. Pressure Chem. Ionization |