| Acronym | Meaning |
| DDT | Dichlorodiphenyltrichloroethane |
| EWMA | Exponentially Weighted Moving Average |
| CTD | Charge Transfer Device (optical Spectroscopic Detector) |
| PT2F | Second-order Perturbation Theory (with) Fock (matrix) |
| BSE | Backscattering Electrons |
| MEMOSA | Microelectromechanical Optical Sensor Array |
| CCD | Charge Coupled Device |
| ASE | Aromatic Stabilization Energy |
| NDA | Nondestructive Assay |
| NSE | Neuron-specific Enolase |