| Acronym | Meaning |
| SCOT | Shell Claus Off-gas Treating |
| APD | Air Particulate Detector |
| AIEMP | Ab Initio Embedding Model Potential |
| PMO | Perturbed Morse Oscillator (model Potential) |
| MCL | Maximum Contaminant Level |
| RP/M | Reinforced Plastics/mortar |
| CPDWB | Coulomb-projected Distorted-wave Born |
| CETO | Cartesian Exponential Type Orbital |
| IAGA | International Association Of Geomagnetism And Aeronomy |
| MAD | Multiwavelength Anomalous Diffraction |