| Acronym | Meaning |
 | AOT60 | Accumulated Ozone Exposure Above A Threshold Value Of 60 Ppb |
 | MRCC | Multireference Coupled Cluster |
 | OEM | Original Equipment Manufacturer |
 | RME | Reduced Matrix Equations |
 | SSER | Spinless Salpeter Equation (with) Retardation |
 | MRSPT | Modified Rayleigh-Schroedinger Perturbation Theory |
 | HNFETB | Hybridization Of Nearly Free Elctrons With Tightly Bound States (for Band-structure Calcns.) |
 | ESTEC | European Space Research And Technology Centre |
 | SPT | Standard Penetration Test |
 | SID | Surface Induced Dissociation |