| Acronym | Meaning |
| PIVCDW | Phase Integral Variational Continuum Distorted Wave |
| NASA | National Aeronautics And Space Administration |
| ETAAS | Electrothermal Atomic Absorption Spectrometry |
| PBDD | Polybrominated Dibenzodioxin(s) |
| DTS | Diametral Tensile Strength |
| ATEM | Analytical Transmission Electron Microscopy |
| EMAT | Electromagnetic-acoustic Transducers |
| ZDC | Zero-degree Calorimeter |
| ASSIST | Abstract Semi-Markov Specification Interface To The SURE Tool [propulsion] |
| MTCT | Mother-to-child Transmission |