| Acronym | Meaning |
| PIDAS | Portable Instantaneous Display And Analysis Spectrometer |
| UPVC | Unplasticized Poly(vinyl Chloride) |
| ASP | Antisegregation Process |
| ICI | Industrial, Commercial, And Institutional |
| NODA | Notice Of Data Availability |
| SIA | Stepwise Isothermal Analysis |
| SPA | Self-consistent Phonon Approximation |
| BWCCD | Brillouin-Wigner Coupled-cluster (with) Double (excitation) |
| IPS | Inverse Photoemission Spectroscopy |
| NRFE | Normalised Relative Fit Error |