| Acronym | Meaning |
| MQDT | Multichannel Quantum Defect Theory |
| AQS | Ambient Quality Standard |
| HAD | Hollow Anode Discharge |
| GTSSP | Global Temperature And Salinity Pilot Program |
| BEBO/R | Relaxed Bond Energy-bond Order Method |
| NEXAFS | Near-edge X-ray Absorption Fine Structure |
| IPC | Ion-pair Chromatography |
| WASP | Wiskott-Aldrich Syndrome Protein |
| NEIC | National Enforcement Investigations Center |
| IMROX | Immersed Rotation Oxidation |